Which ordered pair is the solution to the system of equations?
x+y=4
x-y=-6

A.(2, 2)
B.(1, −7)
C.(−1, 5)
D.(−2, 4)

Question

Which ordered pair is the solution to the system of equations?
 x+y=4
 x-y=-6
 
 
 A.(2, 2)
 B.(1, −7)
 C.(−1, 5)
 D.(−2, 4)

triciaal · Answer

add the 2 eqns to eliminate y.
solve for x 
substitute in expression to get y value

readergirl12 · Answer

Could you show me how to do that? I'm sorry never been very good at this. :c

triciaal · Answer

slow down and read the directions

readergirl12 · Answer

Um..Okay give me a minute.

anonymous · Answer

If it is an MCQ, then just substitute the values of x and y in both equations and see which pair satisfies both equations..

anonymous · Answer

@readergirl12 I might have to leave in a bit, so the answer to your problem is C, (-1, 5). I have a huge headache, but I used the graphing calculator desmos. Sorry if giving the answer is against the rules though. Ask someone else to tell you how to solve the problem.

readergirl12 · Answer

@Needhelpstudying  I was just about to type that actually.. xD

anonymous · Answer

@readergirl12 Thanks for the medal!