Question

If y varies directly with x, and x = 12 when
y= 24, find y when x= 36.

Answer 1

y = 72

Explanation:

y = k(x)

k = y/x

when x = 12, y = 24

there k = 24/12

k = 2

Find y when x = 36

y = k(x)

y = 2 (36)

y = 72