Linear Systems Matrices

Solve the system of equations: 

• ( -1, 6, 1)

• ( 1, 6, -1)

• None of these

• ( -6, -1, 1)

• A
• B
• C
• D

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• x=2
  y=-1
• x=-1
  y=2
• x=-2
  y=1
• x=1
  y=-2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

At a local grocery store 5 oranges and 7 bananas cost $7.75, whereas 3 oranges and 9 bananas cost $8.25.

Determine the cost of an orange and a banana.

• $0.75 for an orange and $0.50 for a banana

• $0.50 for an orange and $0.75 for a banana

• $0.25 for an orange and $1.00 for a banana

• $1.00 for an orange and $0.25 for a banana

Tags

CCSS.8.EE.C.8C

5x + 8y = -12

3x + 5y = -7

• (1, -10)

• No solution

• (-4, 1)

• (1, 10)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

One group of friends purchased 10 hot dogs and 5 soft drinks at a cost of $12.50. A second group bought 7 hot dogs and 4 soft drinks at a cost of $9.00. Let x = cost of hot dogs Let y = cost of soft drinks Write a system of linear equations.

Tags

CCSS.8.EE.C.8C

The augmented matrix shown in row-echelon form indicates a system with

• one solution

• no solution

• infinitely many solutions

Tags

CCSS.8.EE.C.8B

• A
• B
• C
• D

Tags

CCSS.HSN.VM.C.8

• A
• B
• C
• D

Tags

CCSS.HSN.VM.C.8

Solve the system of equations.
y = 4x+1
3x + 2y = 13

• (1, 5)

• (5, 1)

• (0.25, 2)

• ∅

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6