Pls ! will give brainlist!

which equation represents a nonlinear function?

a. y = x
b. y = 2x
c. y = x + 2
d. y = x^2

D. y = x^2

Step-by-step explanation:

Linear functions are functions in which the power of the unknown variable is 1 , that is the other of the unknown variable will be 1

A. y = x

This is a linear function because both x and y has 1 has their power

B. y = 2x

This is also linear

C. y = x + 2

This is also linear

D. y = x^2

This is not linear , although the power of y is 1 but the power of x is 2 , for it to be linear , the highest power of the unknown must be 1

answer: i believe its b. if you sound out the sentences that sounds wrong.

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation: