Question 14
VariationIf y varies directly as √n and y = 4 when n = 4, find y when n = 1 7/9.
- A.√17
- B.4/3
- C.8/3
- D.2/3
Show the answer and explanation
Answer: C (8/3)
Explanation
y = k√n: 4 = 2k, so k = 2. n = 16/9 gives √n = 4/3, so y = 8/3.
If y varies directly as √n and y = 4 when n = 4, find y when n = 1 7/9.
Answer: C (8/3)
y = k√n: 4 = 2k, so k = 2. n = 16/9 gives √n = 4/3, so y = 8/3.