Is the point (2, –1) is true for the system? (Show handwritten work)
3x - y = 7
2x + 3y = 1

Question

Lars · Answer

I'd really appreciate an answer asap

MidniteSunny · Answer

I don't usually help with math, but let me see what I can do.
(2, -1) is the point given, ok, so I think just substitute it into both equations and see if they're true or not.
3x-y=7
3(2)-(-1)=7
6+1=7
7=7
2x+3y=1
2(2)+3(-1)=1
4+(-3)=1
1=1
So it seems that (2, -1) is true for this system of equations.

Lars · Answer

@midnitesunny wrote:

I don't usually help with math, but let me see what I can do. (2, -1) is the point given, ok, so I think just substitute it into both equations and see if they're true or not. 3x-y=7 3(2)-(-1)=7 6+1=7 7=7 2x+3y=1 2(2)+3(-1)=1 4+(-3)=1 1=1 So it seems that (2, -1) is true for this system of equations.

Thank you!

MidniteSunny · Answer

ofc