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1. |
Use Cramer's rule to solve the system of equations. 
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A. |
(0.2, 0.4) |
B. |
(-0.4, -0.2) |
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C. |
(0.4, 0.2) |
D. |
(0.011, 0.0055) |
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Hint |
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2. |
Find the determinant of  |
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A. |
-16 |
B. |
0 |
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C. |
-21 |
D. |
-11 |
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Hint |
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3. |
Which equation has a graph perpendicular to the graph 3y = 2x - 9? |
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A. |
2x + 3y = 4 |
B. |
3x + 2y = 7 |
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C. |
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D. |
y = 2x + 5 |
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Hint |
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4. |
Three out of the four equations listed below are equations of lines that are parallel to each other. Which equation does not have a graph that is a line parallel to the other three? |
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A. |
8y = - 6x |
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B. |
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C. |
3x + 4y = -16 |
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D. |
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Hint |
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5. |
Graph the system of equations to determine whether it has no solution, infinitely many solutions, or one solution. If the system has one solution, name it.
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A. |
one solution at  |
B. |
no solution |
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C. |
infinitely many solutions |
D. |
one solution at  |
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Hint |
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6. |
Use substitution to solve the system of equations given below.
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A. |
infinitely many solutions |
B. |
(-10, -12) |
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C. |
(-12, -10) |
D. |
no solution |
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Hint |
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7. |
Use elimination to solve the system of equations shown below.
2x - 4y = -5
3x + 4y = -15 |
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A. |
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B. |
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C. |
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D. |
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Hint |
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8. |
Which system of equations is shown in the graph? |
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A. |
x - y = -2
2x + y = 8 |
B. |
3x - 2y = 8
x - 3y = -2 |
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C. |
2x + y = 8
y - 3x = -2 |
D. |
x + 2y = 8
2x - 3y = -2 |
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Hint |
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9. |
Use substitution to solve the system of equations given by y = 2x and 5x + y = 7. |
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A. |
(2, 5) |
B. |
(-1, -2) |
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C. |
(-2, -5) |
D. |
(1, 2) |
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Hint |
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10. |
Use elimination to solve the system of equations given by 3x – 2y = 10 and 5x + 2y = 6. |
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A. |
(-2, -8) |
B. |
no solution |
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C. |
infinitely many solutions |
D. |
(2, -2) |
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Hint |
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11. |
Use graphing to solve the system of inequalities given by y < x + 1 and  |
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A. |
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B. |
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C. |
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D. |
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Hint |
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12. |
Which point is in the solution set of  and y > -2x – 1. |
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A. |
(-2.8, 4.6) |
B. |
(0, 3) |
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C. |
(-2, 8) |
D. |
(-6, 5) |
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Hint |
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13. |
Using the directed graph, how many different routes are there to get from the Boston plant to the Worcester plant in exactly two transfers? |
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A. |
3 |
B. |
1 |
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C. |
2 |
D. |
4 |
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Hint |
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14. |
Using the directed graph, what is the fewest number of transfers possible to get from the Fitchburg plant to the Lowell plant? |
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A. |
1 |
B. |
2 |
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C. |
3 |
D. |
0 |
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Hint |
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