College Level Math Practice Test With Answer Key - Mission Del Paso Campus Page 5
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1725.
Systems of Equations and Matrices: Perform the indicated operation
8
x y z
2
4 0
y
2
10
a. Solve the system
b. Solve the system
x y z
2
5
x
y
2
3
22
x
y
z
1
1 1
0 2 1
3 5
0 2 0
1 2 0
c. Multiply
d. Find the determinant:
1 7
2 1 3
0 0 1
1
1 2
3 1
2
3
2
3
e. Find the inverse
f.
Perform the indicated operation:
1 2
1 2
1
6
26.
Use the graph below to answer the question that follows.
Which of the following equations represents line AB?
A. y =
x + 2
B.
y = x + 3
C.
y =
+ 3
D.
y = 3x + 2
27.
Use the graph below to answer the question that follows.
Which of the following inequalities describes the shaded region?
2
4
A. y <
B.
x
2
2
4
5
4
C. y ≤
D. y ≥
x
x
x
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