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1. |
Which equation describes graph A? |
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A. |
y = 2.25x - 1 |
B. |
y = | x - 1 | |
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C. |
y = | 2.25x | |
D. |
y = 2.25| x | - 1 |
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Hint |
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2. |
A graph of a system of three linear equations in three variables is shown below. How many solutions does the system have? |
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A. |
infinite number |
B. |
0 |
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C. |
1 |
D. |
2 |
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Hint |
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3. |
If  , find I so that  |
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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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4. |
Find the inverse of  |
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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. |
Write the matrix equation  as a system of linear equations. |
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A. |
-2s + 5t = 7
s + 8t = 12 |
B. |
-2s + t = 12
5s + 8t = 7 |
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C. |
-2s + t = 7
5s + 8t = 12 |
D. |
-2s = 7
5t = 12 |
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Hint |
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6. |
Solve  |
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A. |
 |
B. |
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C. |
no solution |
D. |
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Hint |
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7. |
Solve 4x2 - 8x + 3 = 0 by completing the square. |
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A. |
1, 3 |
B. |
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C. |
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D. |
 , 3 |
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Hint |
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8. |
Solve x2 - 4x + 1 = 0 by completing the square. |
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A. |
1 |
B. |
2 |
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C. |
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D. |
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Hint |
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9. |
Approximate the real zero of h(x) = 2x4 - 3x2 + x + 1 to the nearest tenth. |
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A. |
1.6 |
B. |
-0.3 |
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C. |
-1.3, -0.5 |
D. |
-1.5, 0.9 |
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Hint |
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10. |
What is the polynomial function of least degree with integral coefficients that has zeros 2 and 3i? |
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A. |
y = x3 - 2x2 - 9x + 18 |
B. |
y = x2 - 5x - 6 |
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C. |
y = x3 - 2x2 + 9x - 18 |
D. |
y = x2 + x - 6 |
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Hint |
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11. |
What are all of the rational zeros of the function
q(x) = x4 - x3 + 4x2 - 4x? |
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A. |
0, 1 |
B. |
0 |
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C. |
0, -2 |
D. |
0, 1, ±2 |
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Hint |
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12. |
Which equation is in quadratic form? |
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A. |
x4 - x2 + x - 1 = 0 |
B. |
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C. |
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D. |
3x3 + 3x + 3 = 0 |
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Hint |
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13. |
Which point is not in the solution set of  |
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A. |
(9, –1) |
B. |
(6, 1) |
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C. |
(1, –1) |
D. |
(14, –3) |
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Hint |
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14. |
Which of the following cannot be true concerning Cramer's Rule for two variables? |
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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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15. |
Simplify  |
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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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16. |
What is the domain and range of  ? |
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A. |
D: 
R:  |
B. |
D: 
R:  |
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C. |
D:
R: |
D. |
D:
R: |
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Hint |
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17. |
If the length of the transverse axis is 10 units, and the length of the conjugate axis is 6 units, what are the coordinates of the vertices? |
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A. |
(5, 0) and (-5, 0) |
B. |
(3, 5) and (3, -5) |
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C. |
(0, 5) and (0, -5) |
D. |
Cannot be determined from given information. |
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Hint |
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18. |
Write the standard form equation of  and identify the conic section. |
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A. |
 ellipse |
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B. |
 parabola |
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C. |
 hyperbola |
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D. |
 hyperbola |
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Hint |
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19. |
Simplify  . |
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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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20. |
Which of the following is the LCM of  . |
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A. |
66s4q2 |
B. |
33s4q2 |
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C. |
66s4t2q2 |
D. |
33s4t2q2 |
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Hint |
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