Question

Y varies directly as X. If X=2 and y=10. Find Y when X=7

Answer 1

y= 35

Explanation:

y directly proportional to x

where x= 2, y= 10

y=kx

10= k× 2

k= 10/2

k= 5

to find y when x is 7

y = kx

y = 5× 7

y= 35