1. Find the value of two numbers if their sum is 12 and their difference is 4.

2. Solve using the elimination method.3x + 2y = 7

1. 5x - 2y = 1

3. Solve using the elimination method .x - 3y = -17

-x + 8y = 52

4. Solve by the substitution method.3x - 5y = 15

y = 2x + 4

5. Solve by the elimination method.2x + 3y = 18

5x - y = 11

6. Which matrix represents the image of the triangle with vertices at (-2, 0), (1, 5), and (4, -8) translated 4 units left and 3 units up?

7. Solve using matrices.x - 3y + z = -9

x + y - 3z = -5

3x - y + z = 11

8. Solve using matrices.3x - 2y + z = -5

-2x + 3y - 3z = 12

3x - 2y - 2z = 4

9. Evalute [0 2 9 -4] + [-2 10 3 5]