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Algebra Vocab Lesson 2
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Terms in this set (36)
relation
set of pairs of input and output data
domain
set of inputs (x-coordinates)
range
set of outputs (y-coordinates)
function
relation in which every input has exactly one output
vertical line test
if a vertical line passes through more than one point on a graph of a relaion then it is not a function
function notation
f(x), g(x), h(x), etc. said "f of x" or "function of x"
independent variable
represents the inputs
dependent variable
represents the outputs
function rule
equation that represents the output value in terms of an input value
direct variation
y=kx
constant of variation
"k" in variation equations
slope
the rate of change between two points (y1-y2/x1-x2)
linear function/linear equation
function/equation whose graph is a line
y-intercept
point where the line crosses the y-axis
x-intercept
point where the line crosses the x-axis
slope-intercept form
x=mx+b (m=slope & (0,b): y-intercept)
point-slope form
y-y1= m(x-x1)
standard form of a linear equation
Ax+By=C
parallel lines
same slope
perpendicular lines
slopes that are negative/opposite reciprocals
scatter plot
graph that relates two sets of data by plotting them as ordered pairs
correlation
strength of the relationship of the data
line of best fit
line that models the data most accurately
correlation coefficient
indicates the strength of correlation
parent function
simplest form of a function
transformation
shift, stretch, or reflection
translation
shift horizontally or vertically
reflection
flips the graph across the line
vertical stretch
multiplies all y-values by a value greater than 1
vertical compression
multiplies all y-values by a value between 0 and 1
absolute value function
f(x)=|x|
axis of symmetry
a line through a shape so each side is a mirror image
vertex
highest or lowest point
linear inequality
inequality with 2 variables whose graph is a region bounded by a line
boundary
function that encloses the solutions of an inequality
half-planes
coordinate plane is split into 2 regions
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