Question

If y varies directly as x, and y is 6 when x is 72, what is the value of y when x is 8?

1/9
2/3
54
96

Answer 1

y = 2/3.

Explanation:

y = constant nunber × x,

6 = constant number × 72,

Constant number is 1/12.

y = 1/12 × 8 = 2/3.

Thus the answer is 2/3.