If y varies directly as x, and y is 20 when x is 4, what is the constant of variation for this relation?

Question

asked Mar 26, 2018 138k views

2 Answers

AvisSiva · Answer 1 · 2018-03-29T17:33:02+0000

Answer: 5

Explanation:

Let k be the constant of variation for this relation.

If y varies directly as x, then the equation of direct variation is given by ;-

y=kx , where k is the constant of variation for the relation.

$\Rightarrow\ k=(y)/(x)$

Now, for the given value of y = 20 and x=4, the value of constant of variation is given by :-

$\Rightarrow\ k=(20)/(4)=5$

Hence, the value of constant of variation for this relation k = 5.