Question

The value of y is directly proportional to the value of x. If y = 25 when x = 120, what is the value of y when x = 72?

Answer 1

Explanation:

y directly proportional to X

y=kx

when k is constant

y is 25 and X is 120

25=k120

divide both sides by 120

25/120

k=25/120

there fore the law connecting is 25/120

what is the value of y when x = 72? 25/120*72=3

therefore y is 3