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1. |
Use Cramer's rule to find the value of n in the system of equations. 
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A. |
-22 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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2. |
Find the determinant of  |
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A. |
-16 |
B. |
-11 |
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C. |
-21 |
D. |
0 |
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Hint |
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3. |
Which pair of lines graphed below are parallel? |
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A. |
k and m |
B. |
k and n |
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C. |
l and n |
D. |
l and m |
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Hint |
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4. |
Use substitution to solve the system of equations given below.
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A. |
(-5, 5) |
B. |
infinitely many solutions |
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C. |
no solution |
D. |
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Hint |
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5. |
Brenda and Amparo left their homes for their morning runs at the same time. Brenda can run a 10-minute mile and Amparo can run a 12-minute mile. Combined, they ran 15 miles in a total of 2 hours and 42 minutes (162 minutes). How many miles did each woman run? |
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A. |
Brenda ran 11 miles; Amparo ran 4 miles. |
B. |
Brenda ran 8 miles; Amparo ran 7 miles |
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C. |
Brenda ran 9 miles; Amparo ran 6 miles |
D. |
Brenda ran 10 miles; Amparo ran 5 miles |
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Hint |
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6. |
Use elimination to solve the system of equations given below.
3x + 4y = -12
x - y = 10 |
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A. |
(4, -6) |
B. |
(-4, -14) |
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C. |
(28, 18) |
D. |
(52, 42) |
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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. |
-15, 4 |
B. |
-8, -3 |
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C. |
-9, -2 |
D. |
-6, -5 |
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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 + 2y = 8
2x - 3y = -2 |
B. |
x - y = -2
2x + y = 8 |
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C. |
3x - 2y = 8
x - 3y = -2 |
D. |
2x + y = 8
y - 3x = -2 |
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Hint |
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9. |
Write the slope-intercept form of an equation for the line that passes through (-8, -1) and is parallel to the graph of  |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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10. |
Solve the system of equations given by y = 2x + 2 and  . |
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A. |
no solution |
B. |
(4, -6) |
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C. |
(-3, -4) |
D. |
infinitely many solutions |
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Hint |
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11. |
Which point is not in the solution set of  and  |
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A. |
(0, 0) |
B. |
(-1, -2) |
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C. |
(4, 11) |
D. |
(5, 0) |
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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. |
(-6, 5) |
D. |
(-2, 8) |
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Hint |
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13. |
How many ways can supplies be transferred directly to Providence from other cities? |
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A. |
0 |
B. |
1 |
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C. |
3 |
D. |
2 |
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Hint |
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14. |
To which city is there exactly one way in which supplies can be transferred directly from another city? |
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A. |
Boston |
B. |
Worcester |
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C. |
Providence |
D. |
Lowell |
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Hint |
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