Question

select the correct answer. if the function $y = x^a - 31$ is a linear function, what is the value of $a$? a. 1 b. 2 c. 3 d. 4

Explanation:

Step1: Recall linear function form

A linear function has the form \( y = mx + b \), where the exponent of \( x \) is 1.

Step2: Apply to given function

For \( y = x^a - 31 \) to be linear, the exponent \( a \) of \( x \) must be 1.

Answer:

A. 1