April 20, 2014

Homework Help: 7th grade math check

Posted by saranghae12 on Thursday, April 12, 2012 at 9:11pm.

Ok I was wondering if you could check these 3 problems please. I am suppose to set these equations equal but I am not sure if did them right. I think I accidently solved these systems as substitutions. The answers are suppose to be in coordinate pairs.

1) x - y = 11
-3x + y = -21
I got (5,-16)

2) 5x - 4y = 17
-10x + 4y = -42
I got (5,3)

3) x + 3y = -1
3x + 3y = 15
I got (4,1)

Please check if i did it correctly please. thank you

Answer this Question

First Name:
School Subject:

Related Questions

7th grade - I was wondering if there were any sample placement tests that I ...
science - hello! i was wondering if anyone knows when dinosaurs evolved.
help - can someone help me with the pythagorean theorem? VERY HARD IM IN 7TH ...
science 7th grade - In sequential order how does our body digest a crakcer. I ...
7th grade math - solve each equation. Check your solution. 1) 7 2 -X = - 3 3 2) ...
7th Grade - I just wanna know anyone who's been in 7th grade what do you learn ...
7th Grade x y input output tables - I dont understand them please some one help ...
7th grade math - My friend is in the 7th grade and broke his wrist so he cannot ...
7th grade - i need help on Chemistry and i am in 7th grade i don't know how to ...
8th grade Math - I'm actually in 7th grade, but I'm doing 8th grade pre-algebra...