ACE College Algebra II - Unit 4 Review

The graphs of the system shown above intersect at the point (-1, 1). What is the value of 2a + b?

• -12

• -8

• -3

• 12

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which of the following statements is (are) true about the graph of the lines m, n, p, and q shown above?

I. Line m and n show an independent system.

II. Lines m and n show a consistent system.

III. Line q and the line whose equation is -2x + 2y = 6 shows

an independent system.

• I only

• II only

• I and II only

• I, II and II

Tags

CCSS.8.EE.C.8B

If the determinant of the matrix above is 20 , what is the value of w?

• -4

• -3

• 3

• 4

Which of the following correctly describe the system above?

I. Consistent II. Inconsistent

III. Dependent IV. Independent

• I only

• I and II only

• II only

• II and III only

Tags

CCSS.8.EE.C.8B

Given the matrix equation above, what is the value of a + b +c?

• -4

• -2

• 0

• 6

Given the matrix equation above, use your graphing calculator to compute an inverse matrix to find the value of 3x - y + 6z.

• -9

• 2

• 3

• -7

Tags

CCSS.HSA.REI.C.9

Solve the matrix equation above.

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• 
• 
• 

Tags

CCSS.HSA.REI.C.9

Which of the following is the inverse of the matrix above?

• 
• 
• 
• 

Tags

CCSS.HSA.REI.C.9

Which of the following statements is true about the matrix M above?

I. M is a 3 x 2 matrix.

II. If N is a 3 x 1 matrix, M·N is a 2 x 1 matrix.

III. Matrix M has an inverse.

• I only

• II only

• I and II only

• II and III only

Tags

CCSS.HSN.VM.C.8

Which of the following ratios would be used to solve for x if Cramer's Rule were used to solve the above system of equaitons?

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• 
• 

Tags

CCSS.HSA.REI.C.9