Question

Which represents a linear function? a. Y=2x b. 2x^2 c. Y=1/x

Answer 1

Explanation:

Y=2x is linear (also proportional) since it involves only the first power of x

2x^2 is not linear, due to the second power of x (x^2); it is quadratic

Y = 1/x is not linear, due to x being in the denominator.