3 years ago

If y varies directly as x, and y = 15 as x = -3, find y for the x-value of 4.

Mathematics

1 answer:

NeX [460]3 years ago

3 0

Y = kx
15 = -3k
k = -5

so if x = 4
y = kx
y = (-5) (4) = - 20

answer

<span>y = -20 when the x = 4.</span>

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