Question

Which equation does not represent a linear function?

a. y = 8x
by = ½x+2
c. y=0.5x - 1
d. y = 2x³

Answer 1

d. y= 2x³

Explanation:

All of the other equations represent linear functions, and are in the form y = mx + b. D on the other hand contains an exponent, making it a non-linear (in this case cubic) function.