Question

X and y are in direct proportion. What number should go in the box to complete the equation of proportionality? X, 5,15 . Y, 20,60 . The equation of proportionality is Y= __ X

Answer 1

4

Explanation:

When we divide 60÷15 we get 4. We also obtain the same result when we divide 20÷5. So these implies that the value of y is 4 times the value of x.

So we can conclude, Y=4X.