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OpenStudy (anonymous):
y varies directly with x, and y = 24 when x = -15 What is x when y = 16?
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OpenStudy (anonymous):
"y varies directly with x" tells us that the relationship between y and x looks like \[y=kx\] for some constant k. Given this information, do you know how to solve for k?
OpenStudy (anonymous):
divide y by x
OpenStudy (anonymous):
Yup. And you're given a pair of values for x and y, so you can plug in and solve for k.
OpenStudy (anonymous):
so 24+k(-15)?
OpenStudy (anonymous):
*=k
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OpenStudy (anonymous):
ah wait nvm i solved thank you
OpenStudy (anonymous):
Correct! Now that you've found k, use the new value of y (y=16) to find your x!
OpenStudy (anonymous):
haha cool!
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