Question

Graph? Which is linear

Answer 1

Below

Explanation:

1. Linear because it is of the form y = mx + b. The variable x is of the first degree.

The coefficient of x (1/3) ( = slope) is positive so it is increasing.

2. This is non-linear because the variable x is an exponent.

3. Because its of the second degree (x^2) - it is non-linear.