Determine if the function is a power function. If it is, then state the power and constant of variation.
-$$\mathrm { S } = 4 \pi \mathrm { r } ^ { 2 }$$
A) Power is $4 \pi$; constant of variation is 2
B) Power is 2; constant of variation is $4 \pi$
C) Power is 2; constant of variation is 4
D) Not a power function

Question

Quizplus · Accepted Answer

The function $S = 4 \pi r^2$ is a power function because it can be written in the form $S = kx^n$, where $k = 4\pi$ is the constant of variation and $n = 2$ is the power.

Determine If the Function Is a Power Function S=4πr2\mathrm { S } = 4 \pi \mathrm { r } ^ { 2 }S=4πr2

Determine If the Function Is a Power Function $\mathrm { S } = 4 \pi \mathrm { r } ^ { 2 }$