Answer:
Function A. nonlinear
Function B. linear
Step-by-step explanation:
Function A is nonlinear because the y values are changing at a nonlinear rate. To get from 0 to 1, the value is increased by 1. However, to get from 1 to 8, it increases by 7, which is different than before.
Function B is linear because the equation models a linear function. You can test this by drawing a table of values similar to Function A:
[tex]\begin{center}\begin{tabular}{ c c c c } X & 1 & 2 & 3 \\ Y & 4 & 3 & 2 \\\end{tabular}\end{center}[/tex]
You can see the y values change at a linear rate of -1 constantly.
