Question

can someone help me? use a matrix to find a solution to the system of equations.

Answer 1

@jim_thompson5910

Answer 2

start by dividing eq.1 by 8 ((1/8)R1)

-x - y = -2
6x - 9y = -108

6R1 + R2:

-x - y = -2
-15y = -120

divide both sides of eq.2 by -15:

y = 8

use back substitution:

-x -8 = -2
-x = 6
x = -6

(-6,8) so the answer is a.

:P

Answer 3

thank you so much!!! omg

Answer 4

No Problem :)