How do you solve the system by graphing 4x - 2y = -12 and 2x + y = -2?

1 Answer
Jul 13, 2017

x=-2, y=2

Explanation:

To solve x and y in 2 or more functions, you are actually finding x and y values which satisfy all the functions.

In other words, you are finding the intersections of the functions since at intersections, the functions are having the same value for x and y

In this case, I have plotted the functions on the same plane.

The intersection point (in this case only 1) has the coordinate (-2,2)

:. x=-2, y=2

graph{(4x-2y+12)(2x+y+2)=0 [-7.9, 7.9, -3.94, 3.96]}