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y varies directly as x. If x = -6 then y = 10. Find y when x = 6.

Plz help i hvae a time limit on a math test 

 Feb 11, 2021
edited by CatcherGuy77  Feb 11, 2021

Best Answer 

 #1
avatar+365 
+1

Please don't cheat on your test.

I am just going to give you a few hints:

If y varies directly with x, then \(y=kx\), where k is a constant. Set x = -6 and y = -10 to solve for k:

\(10 = -6 \cdot k\\k=-\frac{5}{3}\)

Knowing what k is, plug it back to \(y=kx\), and plug 6 for x, and solve for y. You can figure this out; I believe in you!

 Feb 11, 2021
 #1
avatar+365 
+1
Best Answer

Please don't cheat on your test.

I am just going to give you a few hints:

If y varies directly with x, then \(y=kx\), where k is a constant. Set x = -6 and y = -10 to solve for k:

\(10 = -6 \cdot k\\k=-\frac{5}{3}\)

Knowing what k is, plug it back to \(y=kx\), and plug 6 for x, and solve for y. You can figure this out; I believe in you!

textot Feb 11, 2021

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