Answer:
x = 25
Step-by-step explanation:
A directly proportional relationship satisfies a proportion or two equal ratios. You can create a ratio between x and y coordinates written as y/x.
So when y = 32 and x= 20, the ratio is 32/20. If y = 40, what is x? This is the ratio 40/x. Set them equal in a proportion. Then cross multiply to solve for x.
[tex]\frac{32}{20} = \frac{40}{x}[/tex]
32(x) = 20(40)
32x = 800
x = 25
