CCSS.Math.Content.8.EE.C.8

If a system of equations has no solution, what does the graph look like? 

• intersecting lines
• parallel lines
• skew lines
• intersecting lines

Tags

CCSS.Math.Content.8.EE.C.8

Does the system have one, none or infinite solutions?

y = 2x -11

-3y = -6x -15

• One

• None

• Infinitely many solutions

Tags

CCSS.Math.Content.8.EE.C.8

x + 4y = -8
5x - 4y = -16

• (4,1)
• (1,4)
• (-4,-1)
• (-1,-4)

Tags

CCSS.Math.Content.8.EE.C.8

Does the system have one, none or infinite solutions?

• one
• none
• infinite

Tags

CCSS.Math.Content.8.EE.C.8

Write the system of inequalities
Eiko is drawing caricatures at a fair for 8 hours (480 minutes). She can complete a small drawing in 15 minutes and charges $10 for the drawing. She can complete a larger drawing in 45 minutes and charges $25 for the drawing. Eiko hopes to make at least $200 at the fair. 

• 10x+15y≤480
  45x+25y≥250
• 10x+25y≤200
  15x+45y≤480
• 10x+25y>200
  15x+45y<480
• 10x+25y≥200
  15x+45y≤480

Tags

CCSS.Math.Content.8.EE.C.8

Alexandra finds that she can give 3 haircuts and 2 hair dyes in 315 minutes. Giving 2 haircuts and 4 hair dyes takes 450 minutes.  Which system of equations represents the situation?

• 3x + 2y = 315
  2x + 4y = 450
• 3x + 2y = 450
  2x + 4y = 315
• 2x + 2y = 315
  3x + 4y = 450

Tags

CCSS.Math.Content.8.EE.C.8

Solve this system using any method.

• (-2, 4)
• (-2, -4)
• (2, -4)
• (2,4)

Tags

CCSS.Math.Content.8.EE.C.8

What is the solution to the system?

• (0, 3)
• (1, -1)
• (-3, 1)
• (1, 3)

Tags

CCSS.Math.Content.8.EE.C.8

How can you tell if a point is a solution to a system?

• It makes the first equation true.
• The (x,y) coordinates satisfy both equations
• It makes logical sense
• It makes neither equation negative

Tags

CCSS.Math.Content.8.EE.C.8

Which system of equations is presented on the graph?

• y = - 2x + 1

  y = - 3x + 4

• y = - 2x + 1

  y = 3x - 4

• y = 2x + 1

  y = 3x - 4

• y = - 2x -1

  y = 3x + 4

Tags

CCSS.Math.Content.8.EE.C.8