Find the missing value of the direct variation (2,5) (5,y)

Question

asked Sep 13, 2022 214k views

1 Answer

Pogosama · Answer 1 · 2022-09-17T21:08:51+0000

Answer:

The missing value y=12.5 and we have (5,12.5)

Explanation:

The formula used for direct variation is:

$y\: \alpha \:x\\y=kx$

We need to find missing value (2,5)(5,y)

First we will find k, and then y

We have x=2, y=5

Find k:

$y=kx\\5=k(2)\\k=(5)/(2)\\k=2.5$

Now, we cam find missing value in (5,y)

We have x=5, k=2.5 and y=?

$y=kx\\y=2.5(5)\\y=12.5$

So, the missing value y=12.5 and we have (5,12.5)