If y varies inversely as x and y = 8 when x = 9, find x when y = 12.

Question

Mathematics

Kasen Tapia

26 September, 14:22

If y varies inversely as x and y = 8 when x = 9, find x when y = 12.

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Answers (1)

Know the Answer?

Lacey Rogers · Answer 1

x = 6

Step-by-step explanation:

An inverse variation is

xy = k where k is the constant of variation

8*9 = k

72 = k

xy = k

Let y = 12

x*12 = 72

Divide each side by 12

12x/12 = 72/12

x = 6