Question 30
VariationIf x varies inversely as y and x = 2/3 when y = 9, find the value of y when x = 3/4
- A.1/18
- B.8/81
- C.9/2
- D.8
Show the answer and explanation
Answer: D (8)
Explanation
xy is constant: 2/3 × 9 = 6. So y = 6 ÷ 3/4 = 8.
If x varies inversely as y and x = 2/3 when y = 9, find the value of y when x = 3/4
Answer: D (8)
xy is constant: 2/3 × 9 = 6. So y = 6 ÷ 3/4 = 8.