SOLUTION: w is directly proportional to z. If w = -6 when z =2,find w when z =-3

Question 135634: w is directly proportional to z. If w = -6 when z =2,find w when z =-3
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Two quantities y and x are said to be in direct proportion if y is given by a constant multiple of x, i.e. where c is a constant.

So, for your problem .

You are given that when , so , or

Now you can write:

w for is now a simple matter of substitution and arithmetic.
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