3 years ago

If a varies directly with b and a = -2 when b =3 what is the constant of variation

1 answer:

lina2011 [118]3 years ago

3 0

A varies directly with b → a = kb where k is the constant of variation (i.e. slope)

-2 = k × 3 ← substitute values into the formula above

-2/3 = k ← result of dividing both sides by 3

Answer: k = $-\frac{2}{3}$

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