Question

The value of y varies directly with x. If x=13, ten y=65. What is the value of x when y=35?

Answer 1

x=7

Explanation:

direct variation is in the form y=kx

65 = k 13

by dividing both sides be 13, we see that 5 = k

thus, we can then take the next situation 35 = 5x

dividing both sides by 5 brings us to 7 = x