Question

Y varies directly with x, and y = 5 when x = 4. What is the value of x when y = 8?

Please help

Answer 1

x - y

4 - 5 = -1

The difference between x and y is -1.

8 - 1 = 7

The answer for when y = 8, x = 7.

Answer 2

y = kx,,5=4k,,k=5/4,,8=(5/4)x,,x=6.4