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relation
mapping or pairing of input values with output values



function and onetoone
when each x has exactly one y value

independent variable
input variable

dependent variable
output values depends on the independent variable

linear function
can be written as y=mx+b or already set up as f(x)=mx+b

piecewise function
has two equations, both of them go to a different part of the functions domain

points of discontinuity
points on the graph of a function where there is a gap or break

step function
a piecewise function that resembles a set of stairs

extrema
the maximums or minimums of a function

average rate of change
a funtion between two points (X_{1},Y_{1}) and (X_{2},Y_{2}) on its graph is the slope of the line through two points

