1 Answer

AndMarkus · Answer 1 · 2019-09-28T12:07:23+0000

y varies directly with x
⇒ y = kx where k is a constant.

Find k:
y = 6 when x = 2/3

6 = 2/3 k
k = 6 ÷ 2/3
k = 6 x 3/2
k = 9

Equation:
Equation : y = 9x

Find x:
when y = 12,
12 = 9x
x = 12 ÷ 9
x = 4/3

Answer: 4/3

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