Question 24
VariationIf y ∝ 1/√x and x = 16 when y = 2, find x when y = 24
- A.1/9
- B.1/6
- C.1/3
- D.2/3
Show the answer and explanation
Answer: A (1/9)
Explanation
y = k/√x: 2 = k/4, so k = 8. Then 24 = 8/√x gives √x = 1/3 and x = 1/9.
If y ∝ 1/√x and x = 16 when y = 2, find x when y = 24
Answer: A (1/9)
y = k/√x: 2 = k/4, so k = 8. Then 24 = 8/√x gives √x = 1/3 and x = 1/9.