Question

Y varies directly with X and Y equals 60 when x equals 12

Answer 1

y = 5x

Explanation:

since y varies directly as x then the equation connecting them is

y = kx ← k is the constant of variation

to find k use the condition y = 60 when x = 12, then

k =
`(y)/(x)` =
`(60)/(12)` = 5

y = 5x ← is the equation of variation