Question

Can anybody tell me how to get the difference between direct and inverse variation in problem sums ? I mean , how to understand that this problem needs to be done using direct variation and this needs to be done using inverse .

No copyright of previous ans or else I'll report it ...

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Answer 1

Answer:

See if one substance or a thing is decreasing n another is increasing simultaneously, it is inverse variation. And vice versa as well as the substances are becoming equal is direct variation.

Answer 2

Once we know the variation we're using we can define our variables.

P = amount of paycheck

h =# of hours

So we can now define our paycheck to be

$P=kh$

Johnny earns

$

594

when he works twenty-two hours. So we can plug those into our equation.

$P=kh</p><p>(594)$$=k(22)</p><p>[tex]\frac{594}{22}$ =$\frac{22k}{22}$

$27=k$

Thus, $k$ is now a known quantity, and our equation becomes:

$P=27h$

How much would he earn if he were to work thirty-seven hours?

$P=27h$

$P=27(37)$

$P=999$

We state,

$When_he_works_37_ hours_he earns_999_ dollars._$