Question

If x and y vary directly, and x = 12 when
y = 4, what is the value of x when y = 1 ?

Answer 1

Answer: x = 3

Explanation:

y for x

4 for 12

1 for ?

Cross multiply

4? = 12 x 1

4? = 12

Divide both sides by 4

? = 3

When y = 1, x = 3.

Hope that helped!

Answer 2

3

Explanation: