Question

Find the value of y for a given value of x, if y varies directly with x.

If y = 2.52 when x = 8.4, what is y when x = 2.7?

Answer 1

Answer is y = 0.81

Explanation:

Answer 2

if y directly varies with x that means that we can write:
y = k*x

if we implement y = 2,52 and x = 8,4 we can calculate k

k = y/x = 0.3

now we have k and x and need to find y

y = k*x
y = 0 .3 * 2.7 = 0.81

Answer is y = 0.81