Math 8, Mr. Lott, Test 3 Module 8

Solve the following system of equations using Substitution:

y = 2         2x + 8y = 6

Your answer should be an ordered pair. ( x , y )

*****STAR this question on your paper*****

Evaluate responses using AI:

OFF

In order to solve a system of equations using substitution, one equation must be solved for one variable.

• True

• False

Solve the following system of equations:

y = 2x + 1

y = 4x - 1

• ( 1 , 3 )

• ( -1 , -3 )

• ( 3 , 1 )

Solve the following system of equations:

y = 2x + 1

y = -x - 2

• ( 1, 1 )

• ( -1 , -1 )

• ( -1 , 1 )

• no solution

Solve the system of equations:

-10x + 2y = -6

y = 2

• ( 1 , 2 )

• ( 2 , 1 )

• no solution

• infinite solutions

Solve the following system of equations:

3x − 2y = –4

–8x + 9y = –4

• ( 4 , 4)

• ( -4 , 4 )

• ( -4, -4 )

• none of these

Solve the following system of equations:

–2x − y = 17

y = 3

• ( -10 , 3 )

• ( 10 , -3 )

• ( 3 , 2 )

Solve the following system of equations:

x + 3y = 9

y = 6

• ( 6 , 6 )

• infinite solutions

• ( 9 , 6 )

• ( -9 , 6 )

Solve the following system of equations:

–2x + 2y = 20

–x − 2y = –11

• ( -3 , -7)

• ( -3 , 7 )

• no solution

• infinite solutions

Solve the following system of equations:

–x + 2y = –4

3x − 2y = 20

• ( 8 , 2 )

• ( 10 , 8)

• ( -8 , 2 )

• no solution