solving systems by substitution

y = -2x + 18
y = 8

• (5, 8)
• (-5, 8)
• (2, 8)
• (-2, 8)

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

Solve this system of equations. 
y = 2x + 1
y = 4x - 1

• (1,3)
• (-1,-3)
• (-1,3)
• (3,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

y = -2x + 5
y = 2x - 11

• No Solution
• (0, 0)
• (3, -1)
• (4, -3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What does
"solution to a system of equations"
mean?

• It's the point where both equations equal zero
• It's the point where graphs of both equations cross the y-axis
• It's the point that solves both equations at the same time
• It's the point where graphs of both equations cross the x-axis

Tags

CCSS.8.EE.C.8B

y = 3x + 2
y - 3x = 2

• no solution
• infinite solutions
• (0 , 0)
• (2 , 2)

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

What is the solution to this system of equations?
 $y=x-2$  
 $y=-2x+1$  

• (1, -1)

• (-1, 1)

• (0, -2)

• (2, 0)

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11

• Infinite number of solutions

• (0, 7)

• (-5, -7)

• (5, 7)

Tags

CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B

• No Solution

• (2, 2)

• (-1, 2)

• (-1, -2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (-1, 3)

• (0, -3)

• (1, 3)

• (1, -3)

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11

• (1, -4)

• (1, 4)

• (-4, -7)

• (-7, -4)

Tags

CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B