what is the solution of the system of equations 2x -5y = 11 and -2 + 3y = -9? This is a multiple choice question: (1). (-3,-1) (2). (-1,3) (3). (3,-1) (4). (3,1)

Question

what is the solution of the system of equations 2x -5y = 11 and -2 + 3y = -9? This is a multiple choice question: (1). (-3,-1)   (2). (-1,3)   (3). (3,-1)  (4). (3,1)

anonymous · Answer

Substitute each ordered pair into either of the equations and solve, the one that gives you consistent results, is the correct answer:
Pair 1:   2(-3)-5(-1)=11   True?
Pair 2:   2(-1)-5(3)=11     True?
Pair 3:   2(3)-5(-1)=11     True?
Pair 4:   2(3)-5(1)=11      True?
The one where you answered true is correct. 
To be 100% certain, do that for both equations, the correct result must be consistent for both equations.

anonymous · Answer

Oh yeah! i never thought of that.