Question

Find the value of y for a given value of x, if y varies directly with x.
If y = 39 when x = –117, what is y when x = –132?

Answer 1

-117 / 39 = -3
x = -3y
Now replace x with -132 and solve.

Answer 2

y=39
x=-117
y when x=-132

39/-117=k
k=-0.3

y=-0.3*-132
y=39.6
corret?

Answer 3

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