Question

the variable y and x vary directly with each other, when x =4, y =24 whick equation correctly relates x and y​

Answer 1

SOLUTION

GIVEN

The variable y and x vary directly with each other, when x = 4 , y = 24

TO DETERMINE

The equation which correctly relates x and y

EVALUATION

Here it is given that the variable y and x vary directly with each other,

$\sf{y \propto \: x}$

$\implies \sf{y = kx}$

Where k is a non zero real number

when x = 4 we have y = 24 gives

24 = 4k

$\implies \sf{k = 6}$

Hence the required equation is

$\sf{y = 6x}$

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