Question

If y varies directly as x and y = 28 when x = 4, then find k, the constant of proportionality.

Answer 1

Is the answer 7?

Answer 2

y=kx
28=k4
k=7

Answer 3

If y varies inversely as x and y = 10 when x = 5, then the constant of variation would be:
2? @alyisnumber1

Answer 4

y=k/x
10=k/5
k=50

Answer 5

Thank you!