Line Q is represented by the following equation: 2x + y = 11

Which equation completes the system that is satisfied by the solution (3, 5)?

x + 2y = 15
x + y = 15
x + y = 8
x − y = 2

Question

Line Q is represented by the following equation: 2x + y = 11 

Which equation completes the system that is satisfied by the solution (3, 5)?

 x + 2y = 15
 x + y = 15
 x + y = 8
 x − y = 2

nuccioreggie · Answer

@whovianchick

whovianchick · Answer

Aight this is my last one though I've actually got school to finish today  XD

nuccioreggie · Answer

ok lol i only got 3 more ):

whovianchick · Answer

This one is pretty simple. You know that the first equation has a solution of (3,5), you just need to figure if another one does, too. We do that by plugging it in.

x + 2y = 15
(3) + 2(5) = 15                 NO
3+10=15
13=15   
                          
 x + y = 15
(3) + (5) = 15                  NO
8= 15

 x + y = 8
(3) + (5) = 8                      YES
8=8                            

 x − y = 2
(3)-(5)=2                       NO
-2=2

whovianchick · Answer

The answer is C

whovianchick · Answer

And if you only have 3 left I'll see what I can do

nuccioreggie · Answer

ok u cant answer just 3 more ):

nuccioreggie · Answer

ok (: