solve the following

Question

y = 2x + 2

y + 3 = 0 

Answer 1

This one is pretty straight forward.  The 2nd equation gives you y + 3 = 0, which means

 

y = -3.

 

Substitute into the first equation and y = 2·x + 2 becomes:

 

-3 = 2·x + 2.

 

Simplify:

 

2·x = -5 ⇒ x = -5/2