Question

I need help with number 21 please help!!!

Answer 1

This is not a direct variation.

Explanation:

Direct variation:

mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other.

(y varies directly with x with a constant variation of k)

`y=kx;\ k\\eq0`

`y=kx\qquad|\text{divide both sides by}\ x\\\\(y)/(x)=k\Rightarrow (y)/(x)=constant`

`21.\\\\x=y+2\qquad|\text{subtract 2 from both sides}\\\\x-2=y\qquad|\text{divide both sides by}\ x\\\\1-(2)/(x)=(y)/(x)\ro(y)/(x)=1-(2)/(x)\\eq constant`