Question

Solve the system of equations by graphing.
x+y=-7
2x+y=6

Answer 1

I would solve it using matrices, thus obtaining the answer (x,y)=(-1,8). When you draw a graph the two graphs should intersect at thia point

Answer 2

For this case, we observe the attached figure. We have the following system of two equations with two unknowns:

`x + y = -7\\2x + y = 6`

The solution of the system will be given by the intersection of the lines. That is, the solution is:

`(x, y) = (13, -20)`

Answer:

See attached figure

`(x, y) = (13, -20)`