Question

If y varies directly with x and y is 10 when x is 5 then what is y when x is 2

Answer 1

y is 4

Explanation:

so the equation is y = kx ( k is the constant)

We've been given x as 5 & y as 10 so we can use these values to find the constant .

10 = k(5)

k = 2

so now , we can find y

y = 2 × 2

y = 4