Question

3. If x and y vary directly, and x = 60 when y = 5, what is the value of у when x = 36 ?

Answer 1

y = 3

Explanation:

Use the direct variation equation, y = kx

Plug in 60 as x and 5 as y, and solve for k

y = kx

5 = k(60)

1/12 = k

So, the equation is y = 1/12x

Plug in 36 as x and solve for y

y = 1/12x

y = 1/12(36)

y = 3

So, when x = 36, y = 3