Question

If y varies directly as x, and y = 15 when x = 5. Find x when y = 9

Answer 1

Answer:

x=3

Step-by-step explanation:

If y is 15 when x is 5, and y =f(x), then the equation is y=3x. Substitute in 9 for y, and do the algebra, and you will get 3. Hope this helped :D