Question

let y varies directly as x. if y=12 when x=4 ,then write a linear equation. what is value of y when x =5

Answer 1

y is directly proportional to x,

y = Kx
----( where K is the constant )
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1.Putting y=12 & x=4 ; we get

12 = k×4
k = 12/4
k = 3
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2. x=5 ; y=?

y = Kx
= 3×5
y = 15
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Answer 2

HEY MATE

YOUR ANSWER IS

y Varies directly as x, the eqaution will be in form of

y = kx, where k is constant of proportionality.

Putting y = 12 and x = 4, we get

=> 12 = 4k

=> k = 12/4

=> k = 3

So, y = 3x

Linear Equation : y - 3x = 0

When x = 5

y - 3*5 = 0

=> y = 15

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THANK UHH