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3 years ago

If x varies directly with y and x = -3 when y = 12, what is the constant of variation?

Mathematics

1 answer:

inn [45]3 years ago

5 0

Answer:

k = - $\frac{1}{4}$

Step-by-step explanation:

Given that x varies directly with y then the equation relating them is

x = ky ← k is the constant of variation

To find k use the condition x = - 3 when y = 12

- 3 = 12k ( divide both sides by 12 )

$\frac{-3}{12}$ = k , that is

k = - $\frac{1}{4}$

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