Study sets matching "direct variation"

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Study sets matching "direct variation"

15 terms
Direct Variation
direct variation graph
origin
direct variation table
direct variation equation
a straight line that goes through the origin
the point (0,0)
the ratio y/x is the same for every pair of points
y=mx or y = kx
direct variation graph
a straight line that goes through the origin
origin
the point (0,0)
15 terms
Direct Variation
direct variation graph
origin
direct variation table
direct variation equation
a straight line that goes through the origin
the point (0,0)
the ratio y/x is the same for every pair of points
y=mx or y = kx
direct variation graph
a straight line that goes through the origin
origin
the point (0,0)
20 terms
Direct Variation
If y = 27 when x = 6, write the direct…
If x = 27 when y = 6, write the direct…
If y = 10 when x = 9, write the direct…
If x = 10 when y = 9, write the direct…
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct…
y = 4.5x; x = 10
If x = 27 when y = 6, write the direct…
y = 2/9x; x = 202.5
20 terms
Direct Variation
If y = 27 when x = 6, write the direct…
If x = 27 when y = 6, write the direct…
If y = 10 when x = 9, write the direct…
If x = 10 when y = 9, write the direct…
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct…
y = 4.5x; x = 10
If x = 27 when y = 6, write the direct…
y = 2/9x; x = 202.5
Direct Variation
direct variation graph
origin
direct variation table
direct variation equation
a straight line that goes through the origin
the point (0,0)
the ratio y/x is the same for every pair of points
y=mx or y = kx
direct variation graph
a straight line that goes through the origin
origin
the point (0,0)
Direct Variation
direct variation
constant of variation
parallel lines
perpendicular lines
A linear function defined by an equation of the form y = kx,…
The constant k used with direct or inverse variation.
lines in the same plane that never intersect
lines that intersect to form right angles.
direct variation
A linear function defined by an equation of the form y = kx,…
constant of variation
The constant k used with direct or inverse variation.
15 terms
Direct Variation
direct variation graph
origin
direct variation table
direct variation equation
a straight line that goes through the origin
the point (0,0)
the ratio y/x is the same for every pair of points
y=mx or y = kx
direct variation graph
a straight line that goes through the origin
origin
the point (0,0)
8 terms
Direct Variation
coordinate plane
direct variation
ordered pair
origin
A coordinate system formed by the intersection of a horizonta…
a relationship between two variables in which the data increa…
a pair of numbers used to locate a point on a coordinate grid…
The point (0,0) where the x-axis and the y-axis intersect in…
coordinate plane
A coordinate system formed by the intersection of a horizonta…
direct variation
a relationship between two variables in which the data increa…
13 terms
Direct Variation
y = 120
y = -0.8
y = 37.125
y = 4.8
If y = 8 when x = 3, find y when x = 45.
If y = -4 when x = 10, find y when x = 2.
If y = 27 when x = 8, find y when x = 11.
Find y when x = 12, if y = 2 when x = 5.
y = 120
If y = 8 when x = 3, find y when x = 45.
y = -0.8
If y = -4 when x = 10, find y when x = 2.
6 terms
Direct Variation
Yes - it passes through the origin
No - it does not pass through the origin
No - there is no constant. (y/x - 4/1,…
yes - there is a constant - 1.5. (y/x…
Is this a direct variation?
Is this a direct variation?
Is this a direct variation?
Is this a direct variation?
Yes - it passes through the origin
Is this a direct variation?
No - it does not pass through the origin
Is this a direct variation?
Direct Variation
Yes - it passes through the origin
No - it does not pass through the origin
No - there is no constant. (y/x - 4/1,…
yes - there is a constant - 1.5. (y/x…
Is this a direct variation?
Is this a direct variation?
Is this a direct variation?
Is this a direct variation?
Yes - it passes through the origin
Is this a direct variation?
No - it does not pass through the origin
Is this a direct variation?
7 terms
direct variation
direct variation
direct variation example
direct variation example
direct variation example
means you have an equation that looks like this ... y=kx which s…
y varies directly as x means ... y=kx
y doubles directly as x means ... y = 2x which says y = 2 times x
if Cathy's walking distance varies directly with the number o…
direct variation
means you have an equation that looks like this ... y=kx which s…
direct variation example
y varies directly as x means ... y=kx
14 terms
Direct Variation
If y = 27 when x = 6, write the direct…
If x = 10 when y = 9, write the direct…
If y = -7 when x = -14, write the dire…
If x = -7 when y = -14, write the dire…
y = 4.5x; x = 10
y = 9/10x; x = 10
y = 0.5x; y = 10
y = 2x; y = 40
If y = 27 when x = 6, write the direct…
y = 4.5x; x = 10
If x = 10 when y = 9, write the direct…
y = 9/10x; x = 10
14 terms
Direct Variation
If y = 27 when x = 6, write the direct…
If x = 10 when y = 9, write the direct…
If y = -7 when x = -14, write the dire…
If x = -7 when y = -14, write the dire…
y = 4.5x; x = 10
y = 9/10x; x = 10
y = 0.5x; y = 10
y = 2x; y = 40
If y = 27 when x = 6, write the direct…
y = 4.5x; x = 10
If x = 10 when y = 9, write the direct…
y = 9/10x; x = 10
13 terms
Direct Variation
direct variation
direct variation
constant of variation
direct variation
a relationship between two variables in which the data increa…
y = kx
k; the coefficient of x
k = y / x
direct variation
a relationship between two variables in which the data increa…
direct variation
y = kx
20 terms
Direct Variation
If y = 27 when x = 6, write the direct…
If x = 27 when y = 6, write the direct…
If y = 10 when x = 9, write the direct…
If x = 10 when y = 9, write the direct…
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct…
y = 4.5x; x = 10
If x = 27 when y = 6, write the direct…
y = 2/9x; x = 202.5
6 terms
Direct Variation
Constant
Constant Variation
Direct Variation
Constant of Variation for Direct Varit…
remaining the same
changing at the same rate
a function in the form y=kx (where k is not zero)
k is the coeffeicent of x
Constant
remaining the same
Constant Variation
changing at the same rate
12 terms
Direct Variation
direct variation graph
origin
direct variation table
direct variation equation
a straight line that goes through the origin
the point (0,0)
the ratio y/x is the same for every pair of points
y=mx or y = kx
direct variation graph
a straight line that goes through the origin
origin
the point (0,0)
12 terms
Direct Variation
direct variation graph
origin
direct variation table
direct variation equation
a straight line that goes through the origin
the point (0,0)
the ratio y/x is the same for every pair of points
y=mx
direct variation graph
a straight line that goes through the origin
origin
the point (0,0)
15 terms
Direct Variation
direct variation graph
origin
direct variation table
direct variation equation
a straight line that goes through the origin
the point (0,0)
the ratio y/x is the same for every pair of points
y=mx or y = kx
direct variation graph
a straight line that goes through the origin
origin
the point (0,0)
14 terms
Direct Variation
Direct Variation
Direct Variation Equation
Constant of Variation
Constant of Variation Formula
When two values are directly proportional
y = kx
k; the coefficient of x
k = y / x
Direct Variation
When two values are directly proportional
Direct Variation Equation
y = kx
9 terms
Direct Variation
Find the direct variation equation if…
Find the direct variation equation if…
Find the direct variation equation if…
Find the constant of variation if x=32…
y=8x
y=-5x
y=1/5*x
k=1/8
Find the direct variation equation if…
y=8x
Find the direct variation equation if…
y=-5x
Direct Variation
If y = 27 when x = 6, write the direct…
If x = 27 when y = 6, write the direct…
If y = 10 when x = 9, write the direct…
If x = 10 when y = 9, write the direct…
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct…
y = 4.5x; x = 10
If x = 27 when y = 6, write the direct…
y = 2/9x; x = 202.5
Direct Variation
If y = 27 when x = 6, write the direct…
If x = 27 when y = 6, write the direct…
If y = 10 when x = 9, write the direct…
If x = 10 when y = 9, write the direct…
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct…
y = 4.5x; x = 10
If x = 27 when y = 6, write the direct…
y = 2/9x; x = 202.5
6 terms
Module 9: Direct Variation
Yes - it passes through the origin
No - it does not pass through the origin
No - there is no constant. (y/x - 4/1,…
yes - there is a constant - 1.5. (y/x…
Is this a direct variation?
Is this a direct variation?
Is this a direct variation?
Is this a direct variation?
Yes - it passes through the origin
Is this a direct variation?
No - it does not pass through the origin
Is this a direct variation?
5 terms
Direct Variation
What does a direct variation look like?
What is another name for "k"?
If y = 15 when x = 12, find y when x =…
If y = 4 when x = -4, find y when x = 7.
y = kx
constant
...
...
What does a direct variation look like?
y = kx
What is another name for "k"?
constant
9 terms
Direct Variation
y=8x
y=-5x
y=1/5*x
k=1/8
Find the direct variation equation if y=24 when x=3
Find the direct variation equation if y=-15 when x=3
Find the direct variation equation if y=6 when x=30
Find the constant of variation if x=32 when y=4
y=8x
Find the direct variation equation if y=24 when x=3
y=-5x
Find the direct variation equation if y=-15 when x=3
Direct Variation
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
If x = 27 when y = 6, write the direct variation equation and…
If y = 10 when x = 9, write the direct variation equation and…
If x = 10 when y = 9, write the direct variation equation and…
y = 4.5x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
y = 2/9x; x = 202.5
If x = 27 when y = 6, write the direct variation equation and…
Direct Variation
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
If x = 27 when y = 6, write the direct variation equation and…
If y = 10 when x = 9, write the direct variation equation and…
If x = 10 when y = 9, write the direct variation equation and…
y = 4.5x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
y = 2/9x; x = 202.5
If x = 27 when y = 6, write the direct variation equation and…
Direct Variation
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
If x = 27 when y = 6, write the direct variation equation and…
If y = 10 when x = 9, write the direct variation equation and…
If x = 10 when y = 9, write the direct variation equation and…
y = 4.5x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
y = 2/9x; x = 202.5
If x = 27 when y = 6, write the direct variation equation and…
20 terms
Direct Variation
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
If x = 27 when y = 6, write the direct variation equation and…
If y = 10 when x = 9, write the direct variation equation and…
If x = 10 when y = 9, write the direct variation equation and…
y = 4.5x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
y = 2/9x; x = 202.5
If x = 27 when y = 6, write the direct variation equation and…
Direct Variation
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
If x = 27 when y = 6, write the direct variation equation and…
If y = 10 when x = 9, write the direct variation equation and…
If x = 10 when y = 9, write the direct variation equation and…
y = 4.5x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
y = 2/9x; x = 202.5
If x = 27 when y = 6, write the direct variation equation and…
20 terms
Direct Variation
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
If x = 27 when y = 6, write the direct variation equation and…
If y = 10 when x = 9, write the direct variation equation and…
If x = 10 when y = 9, write the direct variation equation and…
y = 4.5x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
y = 2/9x; x = 202.5
If x = 27 when y = 6, write the direct variation equation and…
Direct Variation
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
If x = 27 when y = 6, write the direct variation equation and…
If y = 10 when x = 9, write the direct variation equation and…
If x = 10 when y = 9, write the direct variation equation and…
y = 4.5x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
y = 2/9x; x = 202.5
If x = 27 when y = 6, write the direct variation equation and…
Direct Variation
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
If x = 27 when y = 6, write the direct variation equation and…
If y = 10 when x = 9, write the direct variation equation and…
If x = 10 when y = 9, write the direct variation equation and…
y = 4.5x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
y = 2/9x; x = 202.5
If x = 27 when y = 6, write the direct variation equation and…
Direct Variation
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
If x = 27 when y = 6, write the direct variation equation and…
If y = 10 when x = 9, write the direct variation equation and…
If x = 10 when y = 9, write the direct variation equation and…
y = 4.5x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
y = 2/9x; x = 202.5
If x = 27 when y = 6, write the direct variation equation and…
20 terms
Direct Variation
If y = 27 when x = 6, write the direct…
If x = 27 when y = 6, write the direct…
If y = 10 when x = 9, write the direct…
If x = 10 when y = 9, write the direct…
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct…
y = 4.5x; x = 10
If x = 27 when y = 6, write the direct…
y = 2/9x; x = 202.5
5 terms
Direct Variation
If y = 27 when x = 6, write the direct…
If y = 10 when x = 9, write the direct…
If y = -7 when x = -14, write the dire…
If x = -7 when y = -14, write the dire…
y = 4.5x; x = 10
y = 10/9x; x = 8.1
y = 0.5x; y = 10
y = 2x; y = 40
If y = 27 when x = 6, write the direct…
y = 4.5x; x = 10
If y = 10 when x = 9, write the direct…
y = 10/9x; x = 8.1
Direct Variation
Variation
Proportion
constant of variation "k"
direct variation
relationship between 2 or more variables
An equation that shows 2 equal ratios (fractions)... ex: 3/2=6/4
a nonzero constant like SLOPE
one variable INCREASES as another variable also INCREASES. DE…
Variation
relationship between 2 or more variables
Proportion
An equation that shows 2 equal ratios (fractions)... ex: 3/2=6/4
Direct variation
Direct variation
Constant of variation
Commission
Commission rate
A linear relationship between two variables, x and y, that ca…
The constant k in direct and indirect variation equations
A fee paid to a person for making a sale
The few paid to a person for making a sale expressed as a % o…
Direct variation
A linear relationship between two variables, x and y, that ca…
Constant of variation
The constant k in direct and indirect variation equations
Direct Variation
AS this INCREASES/DECREASES this also…
Titles x3, x and y axes, appropriate g…
What it goes up by
Describe Relationship (Using Keywords)
Create a Graph
Constant of Variation (Something per 1 Something)
AS this INCREASES/DECREASES this also…
Describe Relationship (Using Keywords)
Titles x3, x and y axes, appropriate g…
Create a Graph
16 terms
Direct Variation
direct variation
direct variation
constant of variation
direct variation
a relationship between two variables in which the data increa…
y = kx
k; the coefficient of x
k = y / x
direct variation
a relationship between two variables in which the data increa…
direct variation
y = kx
20 terms
Direct Variation
y = 4.5x; x = 10
y = 2/9x; x = 202.5
y = 10/9x; x = 8.1
y = 9/10x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
If x = 27 when y = 6, write the direct variation equation and…
If y = 10 when x = 9, write the direct variation equation and…
If x = 10 when y = 9, write the direct variation equation and…
y = 4.5x; x = 10
If y = 27 when x = 6, write the direct variation equation and…
y = 2/9x; x = 202.5
If x = 27 when y = 6, write the direct variation equation and…
direct variation
slope
direct variation
the constant of variation for a direct…
parent function
vertical change and horizontal change
mathematical relationship between two variables that can be e…
k is the coefficient of x by dividing each side of y
is the simplest function with these charecteristics
slope
vertical change and horizontal change
direct variation
mathematical relationship between two variables that can be e…
6 terms
Direct Variation
Direct Variation
Equation
K
Slope of the graph y=kx
When two variable quantities have a constant ratio.
y=kx
Constant of Variation or Proportionality.
K
Direct Variation
When two variable quantities have a constant ratio.
Equation
y=kx
13 terms
Direct Variation
constant of variation
direct variation
rate of change
Which of the following functions is a…
the value of k in a direct variation, y = kx
a function of the form y = kx where k is not zero
how the dependent variable changes with respect to the indepe…
f(x) = 2x
constant of variation
the value of k in a direct variation, y = kx
direct variation
a function of the form y = kx where k is not zero
15 terms
Direct Variations
y=4x-5
y=5x
y=37x
y=4x+9
No
Yes
Yes
No
y=4x-5
No
y=5x
Yes
Direct Variation
y=kx
y
x
k
Formula for Direct Variation
dependent variable
independent variable
constant of proportionality
y=kx
Formula for Direct Variation
y
dependent variable
6 terms
Math (Direct Variation and Inverse Variation)
direct variation equation
inverse variation equation
direct variation solve for k
inverse variation solve for k
y= kx
y= k/x
k= y/x
k= xy
direct variation equation
y= kx
inverse variation equation
y= k/x
15 terms
Direct Variations
y=4x-5
y=5x
y=37x
y=4x+9
No
Yes
Yes
No
y=4x-5
No
y=5x
Yes
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