No. It is an equation.
A function would link the variable x to another variable - possibly denoted by y. It is a relationship between two (or more) variables.
2
All the time
The centre is (-5, 3)
You have to put your heart into it!
Yes.
-2, 1.74 and 0.46
2
All the time
2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222
The centre is (-5, 3)
X=1
You have to put your heart into it!
7
Yes.
7(3y-2)-(-4y+9)
{-1,7}
X=-3