Question

soraya wants to sign up for a gym membership at gym club premium. she needs to pay a one - time membership fee of 40 dollars to join, and a monthly fee of 20 dollars. this graph represents the amount of money she spends, y, after x months. what is the slope of the line? the graph has x - axis labeled number of months from 0 to 11, y - axis labeled amount of money spent (dollars) from 20 to 260. there is a line starting at (0, 40) and going up. and there is a box with slope = to fill in.

Explanation:

Step1: Recall slope formula

Slope $m = \frac{y_2 - y_1}{x_2 - x_1}$

Step2: Pick two points from graph

Use $(0, 40)$ and $(1, 60)$

Step3: Calculate slope

$m = \frac{60 - 40}{1 - 0} = \frac{20}{1} = 20$

Answer:

20