# How do you solve the following system?: # -9x - 3y = 2 , 4x-y=-27 #

##### 1 Answer

The solution to this system of linear equations is

#### Explanation:

The solution to a system of linear equations is the point or points that they have in common. These systems can be solved by elimination, substitution, or graphing. I'm going to use elimination to determine one coordinate and substitution to find the second coordinate.

Multiply Equation 1 by

Multiply Equation 2 by

Add Equation 1 and Equation 2.

Divide both sides by

Substitute

Subtract

Multiply

Divide both sides by

Invert and multiply.

The solution to this system of linear equations is

graph{(-9x-3y-2)(4x-y+27)=0 [-13.66, 11.65, 2.91, 15.57]}