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3 years ago

15

Is this right? isn't the Directly proportional equation this. x=(1/k)y

1 answer:

photoshop1234 [79]3 years ago

7 0

It's y=kx. But 'k' is any constant. So my 'k' can easily be 1/(your k). The key is that when 'x' or 'y' increases by some factor, the other one also increases, by some constant multiple of the same factor. If so, then they're proportional.

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I'm going to assume that you are trying to find the two numbers. Based on the information in the problem, we can create the following equations (where $a$ and $b$ are the two numbers):

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We have a systems of equations. In this case, it would be easier to use elimination by adding vertically. This produces the result:

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