Question

Variable y varies directly with variable x, and y = 18 when x = 4.

What is the constant of variation in decimal form?

Answer 1

\(\sf y = kx\)

Plug in what we know:

\(\sf 18 = k(4)\)

Divide 4 to both sides, what do you get?

Answer 2

The constant of variation is 18/4 = 9/2= 4.5

Answer 3

I got 4.5

Answer 4

4.5 is correct.

Answer 5

Thanks :)