Which of the following points lie in the solution set to the following system of inequalities?

y x - 5
y -x - 4

Question

Which of the following points lie in the solution set to the following system of inequalities?

y  x - 5
y  -x - 4

anonymous · Answer

no I did it the wrong way. When I write matrix I always write x on first column and y on second.

hero · Answer

actually, I agree, that 4.5 should be negative.

anonymous · Answer

now I really mess up haha don't listen to me

hero · Answer

y = x - 5
y = -x - 4

y = y 

x - 5 = -x - 4

x + x = 5 - 4
2x = 1

x = 0.5
y = -4.5

hero · Answer

Hey Romero, do you mind teaching me that method of solving using matrices?

anonymous · Answer

lol I'm just taking the class kinda hard to explain...

hero · Answer

It won't be difficult for me to understand. I'm a math guy, but let's go to vyew. It has a whiteboard, voice capabilities.

anonymous · Answer

get all variables on one side and all values to the left.line them up so the same variables line up in the same column remove the variables and try to get 1 on each row.

hero · Answer

I'm going to post a link to vyew in a few minutes.

hero · Answer

http://vyew.com/157292/Open_Study