Algebra 2 Help Please

Question

1.     Use Cramer’s rule to solve { 4x + 3y = 4  Show your work. 

                                                   {  -3x - y = 7

Answer 1

Step 1:

The system of equations are

Convert the equations into matrices form ,

where is coefficient matrix, is variable matrix and is constant matrix.

Solve the equations by using Cramer's Rule.

Since  Cramer's Rule is applicable.

Step 2:

Solution: