Harmonystanley2007 Harmonystanley2007
  • 19-06-2020
  • Mathematics
contestada

Assume that y varies directly with x . Ify = 18when x = 6 , findywhen x = 5 . Write and solve a direct variation equation to find the answer. y =

Assume that y varies directly with x Ify 18when x 6 findywhen x 5 Write and solve a direct variation equation to find the answer y class=

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eudora eudora
  • 24-06-2020

Answer:

y = 15

Step-by-step explanation:

It's given in this question that y varies directly with x.

That means, y ∝ x

⇒ y = kx (where k is the proportionality constant)

If  y = 18 when x = 6,

⇒ 18 = 6k

⇒  k = 3

Therefore, relation between x and y is,

y = 3x

From this relation, if x = 5

y = 3×5

y = 15

Therefore, for x = 15 value of y will be 15.

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