Question

14. Which of these functions is not linear?

A) y=x^2-x
B) y=1-x
C) y=x/3
D) y=2/3x-2x

Answer 1

A) y = x²- x

Explanation:

A linear function will have y equal to x, without x being manipulated by a square root, exponent, etc.

y = x²- x has x being squared.

This will create a graph of a parabola, which is not linear.

So, since it is a quadratic instead of a line, answer choice A) y = x²- x is correct.