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Illusion [34]
1 year ago
9

Solve the system of equations below using a matrix equation.

Mathematics
1 answer:
andreev551 [17]1 year ago
5 0

Answer is b. ( -1, -5)


Answer is b. (-1, -5)

Step by step

Substitute the x and y values into both equations to find equality

 Answer b. Makes both equations equal

2x + y = -7

2(-1) + (-5) = -7

-2 -5 = -7

-7 = -7
it equals now let’s do the 2nd one

x - y = 4

-1 -(-5) = 4

4 = 4

This one equals too. I did the math on the other three answers and they did not equal. 

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