Quiz #14 - Chapter 6 (all 3 methods)

What is the solution to the system of equations on the coordinate grid?

• (3, 1)

• ((2, 0)

• (1, 3)

• (-1, 3)

Tags

CCSS.8.EE.C.8B

What is the correct first step to solve this system of equations using the elimination method?

4x - 3y = -10

2x + 3y = 4

• add the 2 equations together

• subtract the 2 equations

• multiply the second equation by 3

• divide the first equation by 4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

How many solutions are there to the system of equations shown in the graph?

• one solution

• no solution

• infinite solutions

• two solutions

Tags

CCSS.8.EE.C.8A

Solve the system of equations by using the substitution method.

3x + y = 1

y = x + 9

• (7 , -2)

• (2, 7)

• (4, 13)

• (-2, 7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which of the following system of equations have only one solution? Check all that apply.

• 
• 
• 
• 

Tags

CCSS.8.EE.C.8B

Solve the system of equations by using the elimination method.

-2x + y = -1

2x + 5y = 7

• (1, 1)

• (-1, 1)

• (1, -1)

• (-1, -1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations by using the elimination method.

2x + 3y = 15

x - 3y = 3

• (1, 6)

• (6, 1)

• (9, 2)

• (6 , -1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Determine if (4, 1) is a solution for the system of equations.

y = -x + 5

y = 2x - 7

• yes

• no

What is the solution to this system of equations? (Hint: Use the substitution method)

y = -3x - 2

6x + 2y = -4

• (6, 2)

• (1, -5)

• no solution

• infinitely many solutions

Tags

CCSS.8.EE.C.8B

These two lines intersect at ____________.

• (-8, -6)

• (-6, -8)

• (8, -6)

• no solution

Tags

CCSS.8.EE.C.8B