Question

The measurement, y, varies directly with regard to another value, x. If y = 9 and x = 24, find x for y = 25.

Answer 1

x=66.667

Explanation:

Basically, if y varies directly with a value x, you get an equation of the form y=kx, where k is a constant. To answer the question, first substitute 9 into y, and 24 into x.

9=24k

k=0.375

k is 0.375, so to get x, substitute 0.375 into k and 25 into y

25=0.375x

x=66.667

And we got it!