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Suppose y varies directly with​ x, and y equals=20 when x equals = -5. Find x when y equals = 24. 

*nevermind ignore this post* 

 Oct 8, 2019
edited by LydiaJoslin2004  Oct 8, 2019
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Suppose y varies directly with​ x, and y equals=20 when x equals = -5. Find x when y equals = 24. 

 

We  have

 

y  =  k x       

 

And we know that

 

20  = k (-5)      divide both sides by -5

 

-4  = k

 

So.......when y = 24, we have

 

24  =  - 4 x       divide both sides by -4

 

-6   =  x

 

 

cool cool cool

 Oct 8, 2019

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