Thread: Variation

Suppose varies directly as the cube of . If when , what is if is 10?

Please help me I'm stuck on this and I have an online based test that is due pretty soon.

Originally Posted by grud315

Suppose varies directly as the cube of . If when , what is if is 10?

Please help me I'm stuck on this and I have an online based test that is due pretty soon.

Hi grud315,

If p varies directly as the cube of q, then we have:



Substitute your values p = 7 and q = 11 and solve for k.



k is your constant of variation.

Use this value of k, along with q = 10 to solve for p.

Got it, p = 5.259203606.

Thanks a million.