relation
a set of ordered pairs
function
a set of ordered pairs that assigns exactly one y-value to each x-value
domain
the set of x-values for a function
range
the set of y-values for a function
independent variable
the x-value (the input value)
dependent variable
the y-value (the output value)
quadratic function
a function with a u-shaped graph
linear function
a function whose graph is a straight line
absolute value function
a function with a v-shaped graph
function notation
using f(x) to represent y
rule
an equation that represents a function