Question

Question 2 (1 point)

If y varies directly as x and y = 3 when x = 12, what is the value of y when x = 18?

Answer 1

18/4

Explanation:

If y varies directly as x then the equation is y = kx

If y =3 when x = 12 then the equation is 3 = 12k => k = 3/12=> k = 1/4

The value of y when x = 18 is,

y = k *&x

= (1/4) * 18

= 18/4

then the equation is y = 18/4