For the inverse variation equation x y is equal to k , what is the constant of variation, k , when x is equal to negative 3 and y is equal to negative 2 ?
Answer
A
6
B
negative 6
C
negative 2 thirds
D
3 halves
Explanation
For an inverse variation, the constant is k = xy. Substituting x = −3 and y = −2 gives k = (−3)(−2) = 6, so the constant of variation is 6.
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