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Find the constant of variation if y varies directly as x, y= 15 when x= 4

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Find the constant of variation if y varies directly as x, y= 15 when x= 4

Direct Variation Formula:

  • y = kx
  • where k is the constant of variation

Substitute the given values of x and y.

  • y = kx
  • 15 = 4k
  • k = 15/4 = 3.75

Answer:

  • The constant of variation is 15/4 or 3.75 .

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