Some one step by step explanation

2.)

-->

So y = -4.

3.)

Combine like terms:

-->

Isolate x --->

---->

So x = -2

4.)

-->

Combine like terms --->

This equation has many possible solutions.

5.)

-->

Combine like terms --->

---->

----->

So x = -1.

6.)

Distribute --->

This equation has many possible solutions.

step-by-step explanation:

you first to choose the points and then move from then as the slope you have