Solve Systems of Linear Equations by Substitution and Elmination

Solve the following system by substitution: y = 3x - 4

y = -7x + 6

• none of the other choices

• (1, -1)

• (-1, -5)

• infinite solutions

• (-0.5, -4.15)

Solve the following system by substitution:

-8x + 8y = -24

y = 5x - 11

The x-value of the solution is ---.

(Just type in the number)

Solve the following system by substitution:

y = 3x

6x - 2y = 0

• (5, -6)

• no solution

• infinite solutions

• (0, 0)

Solve the following system by substitution:

7x - 8y = -19

y = 5

• (3, 5)

• (5, 3)

• (3, 4)

• (4, 3)

• none of the other choices

Solve the following system by substitution:

x + 4y = -8

-8x + 8y = -16

• no solution

• (-16, 2)

• (-5.333, 3.333)

• (0, -2)

• none of the other choices

Solve the following system by substitution:

6x - 3y = 0

-7x + y = 20

• (4, -3)

• (-4, -3)

• none of the other choices

• (4, 3)

Solve the following system by substitution:

-4x - y = -18

y = x - 7

The y-value of the solution is ---.

(Just type in the number)

Solve the following system by elimination:

-2x + 7y = 22

5x - 7y = 8

• (-3, 16/7)

• (-10, -1)

• (10, 6)

• none of the other choices

Solve the following system by elimination:

4x + 2y = 18

-4x - y = -21

The x-value of the solution is ---.

(Just type in the number)

Solve the following system by elimination:

-2x + 4y = -22

-2x - 3y = -1

• (9, 3)

• (9, -3)

• (5, -3)

• (5, 3)

• none of the other choices