Week 12 Quiz 1

Solve the system by elimination. Show all work.

3x + y = 19

2x - y = 6

• (5, 14)

• (4, 5)

• (5, 4)

• (14, 5)

Solve by elimination:

-9x-4y=-20

5x+4y=4

• (-4,4)

• (4,4)

• (4,-4)

• (-4,-4)

Solve by Substitution:

y = x - 2 -2x + 3y = -1

• (5, -3)

• (5, 3)

• (-5, -3)

• (-5, 3)

Solve by Substitution: y = 2x + 1 y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)