Question

The question ask "Find the rate of change"I got 3 is that the right answer or wrong?

Answer 1

To find the rate of change, use the formula below;

$\text{rate of change =}\frac{y_2-y_1}{x_2-x_1}$

Pick two point and locate its coordinate

(1, 9) and (2, 18)

x₁ = 1 y₁ = 9

x₂= 2 y₂ = 18

substitute the value in the formula

$\text{rate of change =}\frac{18-9}{2-1}$

$=9$