Question

For each ordered pair, determine whether it is a solution to the system of equations. 3x+2y = -6 4x-7y=-8 ​

Answer 1

3x+2y=-6

4x-7y = -8

per combination

-7(3x+2y=-6)

-2(4x-7y=-8)

-21x-14y=42

-8x+14y=16

-29x=58

x=58/-29=-2

we calculate y:

3*-2+2y=-6

-6+2y=-6

2y=-6+6

y=0

S{-2;0}