NEED NOW ALGEBRA PROBLEMS

Here are your assigned problems for this discussion:

1) 6.1 Exercise Set

Match the following set of equations with one of the pictures on pg. 490 of the textbook:

2x - 1 = 1

x + 2y = -7

2) 6.2 Exercise Set

Solve the system of equations.

x + 2y - z = -8

2x - y + z = 4

8x + y + z = 2

3) 6.3 Exercise Set

Write the augmented matrix for the system of equations.

2x - y = 7

x + 4y = -5

4) 6.4 Exercise Set

Find the product, if possible

-1  0  7              6

3  -5  2             -4

5   3   8             1

5) 6.5 Exercise Set

Use the Gauss - Jordan method to find A^-1, if it exists. Check your answers by finding A^-1 and AA^-1.

6    4             

9    6            

6) 6.6 Exercise Set

Evaluate the determinant.

x       4

x       x²