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If y varies directly as the square root of x and y = 4 when x = 16, what is the value of y when x = 9?
  • a)
    2
  • b)
    3
  • c)
    4
  • d)
    6
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
If y varies directly as the square root of x and y = 4 when x = 16, wh...
Since y varies directly as the square root of x, we can use the formula y = k√x, where k is the constant of variation. To find k, we can use the given values: 4 = k√16, which gives us k = 1. Now, we can substitute x = 9 into the formula to find y: y = 1√9 = 3.
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