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Mathematics 19 Online
OpenStudy (anonymous):

Find the value of y for a given value of x , if y varies directly with x

OpenStudy (anonymous):

MY BUTT IS BIGGER DAN URS

OpenStudy (anonymous):

cause i got that buttix

OpenStudy (anonymous):

If y=-252 when x = 84 what is y when x = 74

OpenStudy (anonymous):

@oaktree

OpenStudy (oaktree):

Right here. Give me a moment.

OpenStudy (oaktree):

Okay. So since it's a direct variance, we know the equation is \[y=kx\]So we plug in! We have\[-252 = 84k\]So we then have\[k=-3\]Following so far?

OpenStudy (anonymous):

yea

OpenStudy (anonymous):

@OakTree

OpenStudy (oaktree):

Okay - sorry. So then we plug in our x and k to find y.\[y = kx = (-3)(74) = -222\]Makes sense?

OpenStudy (anonymous):

C! is that all

OpenStudy (oaktree):

Yeah, that's it.

OpenStudy (anonymous):

thanks again

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