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1. |
State the slope and y-intercept of the graph of -y = -0.9x + 4. |
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A. |
m = 0.9, b = -4 |
B. |
m = -0.9, b = 4 |
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C. |
m = 4, b = -0.9 |
D. |
m = -4, b = 0.9 |
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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. |
0 |
B. |
1 |
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C. |
2 |
D. |
infinite number |
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Hint |
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3. |
Triangle FGH has vertices F(12, 6), G(8, 1), and H(-4, 4). If the triangle is reduced so that the resulting perimeter is half the original perimeter, what are the coordinates of F'? |
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A. |
(4, 2) |
B. |
(6, 6) |
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C. |
(6, 3) |
D. |
(-2, -2) |
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Hint |
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4. |
If , find N -1. |
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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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5. |
The graph of the equation 4y2 - 2x - 4y -7 = 0 is a(n) _____. |
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A. |
line |
B. |
ellipse |
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C. |
hyperbola |
D. |
parabola |
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Hint |
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6. |
Manufacturing A company sells one of its products in boxes that are twice as long as they are wide, and 2 inches higher than they are long. Find the dimensions of such a box if the volume is 320 cubic inches. |
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A. |
4 in. by 8 in. by 6 in. |
B. |
6 in. by 12 in. by 14 in. |
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C. |
4 in. by 8 in. by 20 in. |
D. |
4 in. by 8 in. by 10 in. |
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Hint |
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7. |
If what is the value of  |
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A. |
27 |
B. |
29 |
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C. |
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D. |
89 |
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Hint |
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8. |
The table shows the average heights (in centimeters) of females ages 1-14. If this trend continues, about how tall will an average fifteen-year-old female be? |
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A. |
168.5 cm |
B. |
160.3 cm |
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C. |
156.9 cm |
D. |
163.7 cm |
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Hint |
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9. |
When finding the equation for a line of fit for a scatter plot, you should use __________. |
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A. |
two points that you think represent the data well |
B. |
the point most characteristic of the scatter plot |
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C. |
all of the points on the plot |
D. |
the first and last points on the plot, with respect to the horizontal |
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Hint |
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10. |
A line of fit is drawn on a scatter plot showing the number of pets owned by automobile owners and the number of miles driven each month. What would probably be the best description of the slope of this line? |
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A. |
undefined |
B. |
zero |
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C. |
negative |
D. |
positive |
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Hint |
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11. |
Which graph shows the inequality 5x – 2y 8? |
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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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12. |
Which of the following is always true about inequalities whose graphs do not overlap? |
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A. |
Their slopes are equal. |
B. |
Each slope is negative. |
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C. |
Their slopes are opposite reciprocals. |
D. |
Each slope is positive. |
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Hint |
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13. |
Which of the following is not a vertex of the figure formed by  |
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A. |
(6, 4) |
B. |
(0, 2) |
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C. |
(2, –1) |
D. |
 |
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Hint |
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14. |
Solve the system –2x – 4y = 7, 3x + 5y = 9. |
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A. |
 |
B. |
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C. |
(71, –39) |
D. |
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Hint |
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15. |
Determine whether the pair of matrices are inverses. |
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A. |
no, because fractions cannot be a part of an inverse |
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B. |
yes, because A · B = I |
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C. |
no, because A · B I |
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D. |
yes, because each entry in the second matrix is the reciprocal of its corresponding entry in the first matrix |
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Hint |
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16. |
Simplify: if  |
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A. |
 |
B. |
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C. |
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D. |
Cannot be simplified further. |
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Hint |
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17. |
If a graph represents an even-degree polynomial function, what cannot be true? |
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A. |
It could open downward. |
B. |
It could have a negative leading coefficient and as . |
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C. |
It could have 1 real root. |
D. |
It could be true that as , . |
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Hint |
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18. |
Find all the zeros 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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19. |
Given that f(x) and g(x) are inverses, which of the following is true? |
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A. |
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B. |
is undefined |
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C. |
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D. |
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Hint |
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20. |
Which of the following could be the center of a circle that is tangent to the lines y = 3 and x = –2? |
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A. |
(-3, 1) |
B. |
(2, -1) |
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C. |
(0, 0) |
D. |
(2, 1) |
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Hint |
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