Solve the system of equations and choose the correct answer from the list of options.

x + y = −3
y = 2x + 2

5/3 , 4/3
-5/3 , -4/3
-3/5 , -3/4
3/4 , 3/5

Question

Solve the system of equations and choose the correct answer from the list of options. 

x + y = −3 
y = 2x + 2

 5/3 , 4/3 
 -5/3 , -4/3
 -3/5 , -3/4
3/4 , 3/5

anonymous · Answer

x + y = - 3 
move y to the other side

x+ y - y = - 3 - y
     ^^^^ those cancel out

x = - 3 - y

now input "x = - 3 - y" into "y = 2x + 2" and tell me what you get :)

anonymous · Answer

if you're having trouble doing that, just tell me and I can help you step by step

automaticloveletter · Answer

2*(-3)+2=(-4)?

thesmartone · Answer

Why are you doing it the hard way...

thesmartone · Answer

x + y = −3 
y = 2x + 2

Substitute $\sf y=2x+2$ into $\sf x+y=-3$

thesmartone · Answer

So:

$\sf\color{red}{y}=2x+2$
$\sf x+\color{red}{y}=-3$

thesmartone · Answer

Substitute it, you get:

$\sf x+2x+2 = -3$

anonymous · Answer

That's just the way that I am used to doing it. I didn't mean to offend you. Everyone has their own way of solving things differently that works for them and that leads to the same answer.

automaticloveletter · Answer

-4/3 right

thesmartone · Answer

that's wrong...

automaticloveletter · Answer

Well that's odd, considering I got full points on my question.