Question

Solve the following system by graphing. What isthe solution?1.) (2, 1)2.) (1, 2)3.) (-1, 2)4.) (2, -1)

Answer 1

EXPLANATION:

To correctly solve the system of equations, we must follow the following steps:

-We must use a method that allows us to match one of the variables.

-We must first find the value of the variable x and finally we must replace that value in the equations to find y.

The exercise is as follows:

$\begin{gathered} y=-4x-2;\text{ y=2x+4} \\ \text{ y=y} \\ -4x-2=2x+4 \\ -4x-2x=\text{ 2+4} \\ -6x=6 \\ x=\frac{6}{-6} \\ x=-1 \end{gathered}$

Now we must replace value of x in both equations: