The variable y is directly proportional to the variable x. if y = 9 when x = 5, what is the value of y when x = 20?

y = 36

Step-by-step explanation:

so there directly proportional..so lets make a proportion

if y = 9 when x = 5, what is the value of y when x = 20...

 5       20

= (cross multiply)

 9         y

(5)(y) = (20)(9)

5y = 180

y = 180/5

y = 36 <=== so when x = 20, y = 36

40 i don’t know lololol