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1. |
Which equation has a graph that is parallel to the graph of 4x - 2y = 1? |
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A. |
y = 2x - 3 |
B. |
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C. |
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D. |
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Hint |
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2. |
A best-fit line is drawn on a scatter plot showing the average daily temperature and the number of people at a public swimming pool. The slope of the line would probably be ________ |
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A. |
negative. |
B. |
positive. |
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C. |
undefined. |
D. |
zero. |
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Hint |
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3. |
Identify h(x) = [x] + 4. |
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A. |
absolute value function |
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B. |
constant function |
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C. |
greatest integer function |
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D. |
direct variation function |
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Hint |
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4. |
Use Cramer's rule to find the value of n in the system of equations. 
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A. |
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B. |
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C. |
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D. |
-22 |
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Hint |
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5. |
Solve [3x 8y] = [-12 1] for x and y. |
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A. |
x = 4
y = 1 |
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B. |
x = -12
y = 1 |
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C. |
x = -4
y =  |
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D. |
x = -4
y = 8 |
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Hint |
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6. |
 |
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A. |
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B. |
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C. |
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D. |
[10 37] |
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Hint |
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7. |
Choose the line whose slope is undefined. |
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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. |
Find an equation of the line that passes through (0, -6) and (5, 3). |
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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. |
Solve the equation n2 +3n = 0 by graphing. |
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A. |
0, 3 |
B. |
0, -3 |
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C. |
0 |
D. |
3 |
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Hint |
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10. |
Solve x2 - 6x + 25 = 0. |
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A. |
-3 ± 4i |
B. |
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C. |
3 ± 4i |
D. |
6 ± 8i |
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Hint |
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11. |
Find all of the rational zeros of the function p(x) = 2x3 + 3x2 - 11x - 6. |
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A. |
-3, 1 |
B. |
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C. |
-6 |
D. |
-3, 2 |
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Hint |
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12. |
What is the slope of the line with equation  |
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A. |
-7 |
B. |
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C. |
7 |
D. |
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Hint |
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13. |
Choose the ordered pair that satisfies 7x – 15y < -13. |
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A. |
(0, -2) |
B. |
(-2, 0) |
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C. |
(1, 1) |
D. |
(2, -3) |
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Hint |
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14. |
What is always true of an n × n matrix? |
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A. |
It is a row matrix. |
B. |
It has at least two rows and two columns. |
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C. |
It is a column matrix. |
D. |
It is a square matrix. |
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Hint |
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15. |
Two sides of an angle are contained in lines whose equations are 6x + 4y = 15 and 7x – 9y = 3. Find the coordinates of the vertex of the angle. Round to the nearest hundredth. |
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A. |
(–147, –87) |
B. |
(–1.79, 1.06) |
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C. |
(147, 87) |
D. |
(1.79, 1.06) |
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Hint |
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16. |
What is the 4 × 4 identity matrix? |
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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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17. |
In the inequality  what must q be greater than or equal to? |
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A. |
9 |
B. |
5 |
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C. |
21 |
D. |
0 |
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Hint |
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18. |
Find two real numbers whose sum is 12 and whose product is 32. |
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A. |
7 and 5 |
B. |
2.25 and –14.25 |
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C. |
8 and 4 |
D. |
no solution |
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Hint |
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19. |
Which of the following points will not be included in the graph of  ? |
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A. |
(2, 4) |
B. |
(3, 9) |
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C. |
(4, 6) |
D. |
(-2, 4) |
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Hint |
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20. |
Solve the system   |
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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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