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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. |
(0.011, 0.0055) |
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C. |
(0.4, 0.2) |
D. |
(-0.4, -0.2) |
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Hint |
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2. |
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 + 8 |
B. |
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C. |
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D. |
y = -2x |
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Hint |
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3. |
Which pair of lines graphed below are parallel? |
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A. |
l and n |
B. |
k and m |
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C. |
k and n |
D. |
l and m |
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Hint |
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4. |
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 8 miles; Amparo ran 7 miles |
B. |
Brenda ran 10 miles; Amparo ran 5 miles |
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C. |
Brenda ran 11 miles; Amparo ran 4 miles. |
D. |
Brenda ran 9 miles; Amparo ran 6 miles |
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Hint |
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5. |
Use elimination to solve the system of equations given below.
x + 3y = 6
2x - 6y = 8 |
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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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6. |
Which system of equations is shown in the graph? |
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A. |
2x + y = 9
x - y = 6 |
B. |
2x - 6y = 1
7x + 4y = -2 |
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C. |
3x - y = 1
x + 2y = 12 |
D. |
x - 3y = -13
x + y = 1 |
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Hint |
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7. |
Vince and Brian each need two kinds of items at the store. Vince bought 10 of item A and 14 of item B, and spent $97. Brian bought 8 of item A and 25 of item B, and spent $119. How much did each item cost? |
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A. |
item A = $2.10
item B = $1.14 |
B. |
item A = $1.14
item B = $2.10 |
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C. |
item A = $5.50
item B = $3 |
D. |
item A = $3
item B = $5.50 |
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Hint |
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8. |
Solve the system of equations given by y = 2x + 2 and  . |
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A. |
infinitely many solutions |
B. |
(4, -6) |
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C. |
(-3, -4) |
D. |
no solution |
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Hint |
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9. |
Use substitution to solve the system of equations given by x – 4y = 24 and 3x – 4y = 16. |
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A. |
(-4, -7) |
B. |
(10, 3.5) |
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C. |
(10, -3.5) |
D. |
(-4, 7) |
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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, -2) |
B. |
infinitely many solutions |
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C. |
no solution |
D. |
(-2, -8) |
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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. |
(-1, -2) |
B. |
(5, 0) |
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C. |
(0, 0) |
D. |
(4, 11) |
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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. |
(-6, 5) |
B. |
(-2, 8) |
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C. |
(0, 3) |
D. |
(-2.8, 4.6) |
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Hint |
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13. |
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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14. |
How many ways can supplies be transferred directly to Providence from other cities? |
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A. |
2 |
B. |
3 |
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C. |
1 |
D. |
0 |
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Hint |
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