Question

7. If x and y vary directly with each other and x=24, what is y when constant of variation is 3
(i) 21 (1) 2 (ii) 8
(iv) 27​

Answer 1

Answer:

if x is directly vary with y

so

x =24 they have constant gap of 3 so y =27

Answer 2

The answer is y = 8.

Given,

x varies directly with y

x=24

Constant of variation = 3

To Find,

Value of y =?

Solution,

Since x and y vary directly from each other, it implies that
x is proportional to y.
⇒ Now inserting constant of variation and converting to proportionality to the equation,

x = k * y, where k is the constant of variation

substituting given values, k = 3 & x = 24

24 = 3 * y

⇒ y = 8

Therefor the value of y = 8

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