Solving a System of Linear Equations by Elimination

Solve by elimination:
7x+y=-9

-3x-y=5

• No solution

• (1,8)

• (-2,-3)

• (-1,-2)

4x +  8y = 20
-4x + 2y = -30
Which variable will be eliminated?

• The  x

• The  y

• The  z

• The unknown

-5x + 5y = -5

x - 5y = -7

• (3, 2)

• (-1, 3)

• Infinite solutions

• No solutions

2x + 4y = 0

-5x - 4y = 18

• (6, -6)

• (-6, 3)

• Infinite solutions

• No solutions

Which of the following is the correct solution to the system of linear equations?

• (6, 10/3)

• (6,5)

• (4,5)

• (4,-5)

Solve the following system by using elimination:

3x - 5y = 8

2x + 5y = -3

• (1, 5)

• (1, -1)

• (-1, -1)

Solve the following system by using elimination:

• (5, 1)

• (1, 5)

• (5, -1)

Solve the following system by using elimination:

-14x - 10y = -18

7x + 9y = -23

• (7, 8)

• (8, -7)

• (7, -8)

Solve the following system by using elimination:

-3x - 6y = -30

-7x + 8y = -4

• (4, 3)

• (3, 4)

• (4, -3)

Solve the following system by using elimination:

-3x - 6y = 24

4x + 4y = 4

• (-10, -9)

• (10, 9)

• (10, -9)