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1. |
What is the value of the determinant? |
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A. |
-3 |
B. |
12 |
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C. |
-8 |
D. |
-12 |
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Hint |
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2. |
Use Cramer's rule to find the value of n in the system of equations. 
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A. |
 |
B. |
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C. |
-22 |
D. |
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Hint |
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3. |
Choose the slope-intercept form of the equation of the line that passes through (-2, 4) and is perpendicular to the graph of 2x + y = -20. |
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A. |
y = -2x |
B. |
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C. |
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D. |
y = 2x + 8 |
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Hint |
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4. |
Which system of equations is graphed below? |
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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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5. |
Use substitution to solve the system of equations.
5x + 5y = -30
2x - y = 15 |
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A. |
(21, 27) |
B. |
infinitely many solutions |
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C. |
(3, -9) |
D. |
no solution |
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Hint |
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6. |
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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7. |
The sum of two numbers is –11. Twice the first number minus four times the second number is –10. What are the two numbers? |
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A. |
-9, -2 |
B. |
-15, 4 |
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C. |
-6, -5 |
D. |
-8, -3 |
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Hint |
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8. |
Use the graph below to determine if the given system of equations has one solution, no solution, or infinitely many solutions. If the system has one solution, name it.
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A. |
one solution at (-6, 0) |
B. |
one solution at  |
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C. |
no solution |
D. |
infinitely many solutions |
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Hint |
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9. |
Line segment  has endpoints A(-6, -3) and B(2, 1). Line segment  has endpoints C(-4, 8) and D(3, -6). Is perpendicular to ? Why? |
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A. |
No, the lines intersect but not at right angles. |
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B. |
No, the lines are parallel. |
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C. |
Yes, the slopes are negative reciprocals. |
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D. |
Yes, the slopes are opposites. |
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Hint |
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10. |
Use substitution to solve the system of equations given by y = 2x and 5x + y = 7. |
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A. |
(-1, -2) |
B. |
(1, 2) |
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C. |
(-2, -5) |
D. |
(2, 5) |
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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 not in the solution set of y < 7x + 6 and y < -7x + 6. |
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A. |
(0, 2) |
B. |
(2, -15) |
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C. |
(1, -5) |
D. |
(-1, 6) |
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Hint |
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13. |
A geometrical representation of a map is called a ______?______. |
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A. |
pattern |
B. |
coordinate plane |
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C. |
chart |
D. |
directed graph |
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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 Providence plant? |
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A. |
1 |
B. |
3 |
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C. |
0 |
D. |
2 |
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Hint |
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