How do you solve the system of equations $- 7 x - y = 23$ $-7x - y = 23$ and $7 x + 2 y = - 18$ $7x + 2y = - 18$ ?

Question

1457 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-03-11T11:58:14

$(- 4, 5)$ $(-4,5)$

Draw the graphs of the lines $- 7 x - y = 23$ $-7x-y=23$ and $7 x + 2 y = - 18$ $7x+2y=-18$ . Its intersection point is the solution.

GeoGebra

As shown in the graph, $(- 4, 5)$ $(-4,5)$ is the intersection point. So, it is the solution of given lines.

How do you solve the system of equations −7x−y=23-7x - y = 23 and 7x+2y=−187x + 2y = - 18?