Question

Suppose y varies directly with x and y =75 when x = 6. What is the value of y when x = 5?

Answer 1

62.5

Explanation:

y∞x

y=kx( where k is the constant)

75=6k

75÷6 =k

12.5=k

therefore the relationship between k,x and y is y=12.5x

y=12.5×5

y=62.5