Functions Review

A function graph shows the relationship between inputs and outputs

A table is a function if and only is the inputs in the table do not repeat. 

x- coordinate is the input
y-coordinate is the output

The vertical line test is to show if a vertical line passes through a graph only once to determine if it is a function or not

This is NOT a function because it passes through the graph more than once.

This is a function because it only passes through the graph once

Linear functions are graphs with straight lines when their points show a pattern of a line.

A non-linear function is a graph that follows any pattern except a line.