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1. |
Determine which matrix has a determinant. |
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A. |
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B. |
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C. |
[1 -4 -8] |
D. |
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Hint |
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2. |
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. |
3x + 4y = -16 |
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B. |
8y = - 6x |
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C. |
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D. |
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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 n |
B. |
k and m |
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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.
8x - 4y = 16
2x - y = 4 |
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A. |
(2, 0) |
B. |
no solution |
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C. |
infinitely many solutions |
D. |
(0, -4) |
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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. |
no solution |
D. |
(3, -9) |
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Hint |
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6. |
The sum of two numbers is 36. Twice the first number minus the second is 6. Find the numbers. |
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A. |
(14, 22) |
B. |
(30, 6) |
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C. |
(42, 6) |
D. |
(10, 26) |
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Hint |
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7. |
Use elimination to solve the system of equations given below.
3x - 2y = 4
2x + y = -2 |
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A. |
(0, -2) |
B. |
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C. |
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D. |
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Hint |
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8. |
Which system of inequalities 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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9. |
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. |
no solution |
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C. |
one solution at  |
D. |
infinitely many solutions |
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Hint |
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10. |
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 = $5.50
item B = $3 |
B. |
item A = $1.14
item B = $2.10 |
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C. |
item A = $3
item B = $5.50 |
D. |
item A = $2.10
item B = $1.14 |
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Hint |
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11. |
Solve the system of equations given by y = 2x + 2 and  . |
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A. |
no solution |
B. |
infinitely many solutions |
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C. |
(4, -6) |
D. |
(-3, -4) |
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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) |
B. |
(-2.8, 4.6) |
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C. |
(0, 3) |
D. |
(-6, 5) |
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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. |
2 |
B. |
1 |
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C. |
0 |
D. |
3 |
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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. |
Lowell |
B. |
Boston |
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C. |
Worcester |
D. |
Providence |
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Hint |
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