Thread: Rational Functions?

Suppose p varies directly as the cube of x, and inversely with y. If p=5/8 when x=4 and y=10, find p when x=2 and y=16

How do you set up the steps?

When P varies directly with x, it means, for some constant k.

If P varies directly with the cube of x then,

When P varies inversely with y it means,

Now if you use the initial conditions provided you should be able to solve for the constants

Originally Posted by Jen

When P varies directly with x, it means, for some constant k.

If P varies directly with the cube of x then,

When P varies inversely with y it means,

Now if you use the initial conditions provided you should be able to solve for the constants

Thanks for the quick response, I appreciate it.

No Problem.