Precalculus Quiz #9 (Chapter 6 Review)

Tags

CCSS.HSA.APR.D.6

Tags

CCSS.HSA.APR.D.7

Tags

CCSS.HSA.APR.D.7

Tags

CCSS.HSA.APR.D.6

Answer explanation

Type your answer as (A, B, C, D). For example, if A = 1, B = 2, C = 3, and D = 4, you would type (1, 2, 3, 4).

Find the determinant of the matrix .

• A

• B

• C

• D

Determine if the matrix has an inverse, if so find it.

• No

• 0 1

  -1 2

• -1 3

  1 -2

• Does not have an inverse

Tags

CCSS.HSA.REI.C.9

Graph the system of inequalities. Name the coordinates of the vertices of the feasible region. Find the maximum and minimum values of the function for this region.
3 ≤ y ≤ 6
y ≤ 3x + 12
y ≤ -2x + 6
f(x , y) = 4x - 2y

• The maximum value is 0 at (0, 6). The minimum value is - 20 at (-3, 3).
• The maximum value is 0 at (-3, 3). The minimum value is - 20 at (0, 6).
• The maximum value is 0 at (-2, 6). The minimum value is - 20 at (1.5, 3).
• The maximum value is 0 at (1.5, 3). The minimum value is - 20 at (-2, 6).

Tags

CCSS.HSA.REI.C.9