3 years ago

X varies directly with y. if y = -57 when x = 9, find x when y = 27.

Mathematics

1 answer:

kifflom [539]3 years ago

7 0

Answer:

x = -81 / 19

Step-by-step explanation:

y = kx

-57 = 9k

k = -57/9 or -19/3

27 = $\frac{-19x}{3}$

-19x = 81

x = -81 / 19

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