Review 8.1 - 8.3 - summer

Solve by graphing. (8.1)

y = -2x + 1

y = -2x - 1

• (1,3)

• (-1,-3)

• No Solution

• Infinite Solutions

Solve by graphing. (8.1)

• Infinite number of solutions

• (3, 3)

• (3, -3)

• (-3, 3)

Solve by substitution. (8.2)

2x+y=9

y=5x+2

• (1,7)

• (2,5)

• (-1,-3)

• (5,-1)

Solve by substitution. (8.2)

x - 7 = - 2y

2x + y = 5

• (-1,4)

• (4,-1)

• (1,3)

• (3,1)

Solve by using the addition method. (8.3)

-6x + 5y = 1

6x + 4y = -10

• (1,-1)

• (0,-1)

• (1,1)

• (-1,-1)

Solve by using the addition method. (8.3)

−4x − 4y = 0

4x + 4y = 0

• (−6, −4)

• Infinite number of solutions

• No solutions

• (6, 4)