Question

What of the following graph that is a straight line? 1:y =2x +7 or 2:y² = x-7 or y= 2x²+4 or y= 3x³

Answer 1

1. y = 2x + 7

Explanation:

The equation of a linear function is y = mx + b. The "x" has to be a first-degree polynomial (no exponents).