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Algebra Volcab Chap.5

The chapter 5 vocabulary of lines
STUDY
PLAY
Constant of variation
what the k is in the equation y = kx
Axes
Two perpendicular number lines.
Direct Variation
y = kx
Coordinate planes
The plane formed by 2 number lines that intersect at their zero points dividing the plane into 4 quadrants
Parallel lines
Lines in a plane that never intersect
Function
A relation in which X never repeats
Function notation
Replace the Y with f(x)
Perpendicular lines
two lines that meet and form a right angle
Rate of change
A change in a quality over time (slope)
Point-slope form
y-y1 = m(x-x1)
Mapping
The domain is pair with with an element in the range
Origin
The point of intersection of the y and x axis in a coordinate plan (0,0)
Slope
rise /run a ratio that measures a lines' steepness
Slope-intercept form
Y=mx+b
Standard form
ax+by=c
Solution
An order pair that make an equation true
Terms
values in a mathematical sentence that are separated by an addition or subtration sign
X-axis
The horizontal line on a coordinate plane
X-coordinate
The first number in a ordered pair, domain
X-intercept
The X-coordinate at which a graph intercepts the x-axis
Y-axis
The vertical line on a coordinate plane
Y-coordinate
The second number in a ordered pair, range
Y-intercept
The Y-coordinate at which a graph intercepts the y-axis