Systems of Equations Substitution

Does the system have one, none or infinite solutions?
8x + 4y = 12
y = -2x + 3

• (0,3)

• (3,0)

• No solution(parallel lines)

• Infinitely many solutions

Tags

CCSS.8.EE.C.8B

How many solutions?

• One Solution

• No solution

• Infinitely Many Solutions

Tags

CCSS.8.EE.C.8B

The equations of two lines are:
 2x-y=4 and y=-2x+8.
What is the value of x in the solution for this system?

• x=8

• x=3

• x=11

• x=5

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the value of the y-coordinate of the solution to the system of equations 
x-2y=1
x+4y=7 

• 1

• -1

• 3

• 4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the following system by setting the two equations equal to each other.  What is the solution?
HINT:  - 1/3x + 4 = 2/3x + 1 and then solve for x.  Once you find x go back and find y.

• Infinite number of solutions

• (3, 3)

• (3, -3)

• (-3, 3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve:
3x + 2y = 16
7x + y = 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution?

• One Solution

• No solution

• Infinitely Many Solutions

Tags

CCSS.8.EE.C.8A

How many solutions does this system have?

y = 2x + 1

y = 4x - 1

• One Solution

• No Solution

• Infinite Solutions

Tags

CCSS.8.EE.C.8B

How many solutions does this system have?

3x-4=-4+3x

• One Solution

• No Solution

• Infinite Solutions

Tags

CCSS.8.EE.C.7A

How many solutions does this system have?

y=2x + 4

y=2x -4

• One Solution

• No Solution

• Infinite Solutions

Tags

CCSS.8.EE.C.8B