help with variable

Variation equations translate as follows:

. . . . ."y varies directly with x": y = kx

. . . . ."y varies inversely with x": y = k/x

. . . . ."y varies jointly with x and z": y = kxz

Translate your exercise into the appropriate equation form. Plug in the given values and solve for the value of the variation constant "k".

Then re-write the equation in the appropriate form, but this time plugging in the value you just found for "k".

If you get stuck, please reply showing how far you have gotten in following these instructions. Thank you.

Eliz.
 
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