The pair of points is on the graph of an inverse variation. find the missing value.

(5, 4) and (x, 7)

The missing value of

Step-by-step explanation:  

The inverse variation is given by:  

Now convert this into an equation we must multiply the constant variation k we get,

To find the value of k;

use the coordinates (5,4) , where x =5 and y =4

then,

or

On Simplify, we get:

k = 20

the equation become:  

When y =7 we have;

(x ,7) =

therefore, the missing value x is,

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

ratio is 2 : 9

the answer is three

13.5 : 3