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1. |
A line of best-fit should not be drawn for which of the following graphs. |
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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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2. |
Which pair of lines graphed below are parallel? |
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A. |
k and m |
B. |
l and n |
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C. |
k and n |
D. |
l and m |
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Hint |
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3. |
Solve  . |
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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. |
Use elimination to solve the system of equations.
-x + 2y = 18
x + 8y = -38 |
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A. |
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B. |
(-5, -1) |
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C. |
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D. |
(-22, -2) |
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Hint |
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5. |
Simplify (7a4b) (8a7b6). |
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A. |
15a11b7 |
B. |
56a11b7 |
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C. |
15a28b6 |
D. |
56a28b6 |
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Hint |
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6. |
Solve the system of equations y = 3x + 4 and  by graphing. |
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A. |
(-3, -5) |
B. |
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C. |
(3, 5) |
D. |
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Hint |
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7. |
Draw the graph of y < 0.5x + 1. |
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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. |
If a rocket is fired from the ground with an initial velocity of 75 meters per second, then the height of the rocket after t seconds is h = 75t - 4.9t2. Find the height of the rocket after 3 seconds. |
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A. |
130.4 meters |
B. |
252.5 meters |
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C. |
180.9 meters |
D. |
221.6 meters |
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Hint |
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9. |
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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10. |
Which characteristic describes a graph that is linear and has direct variation. |
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A. |
Variables x and y are not proportional. |
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B. |
The graph does not pass through (0, 0). |
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C. |
The equation has the form y = mx + b. |
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D. |
The equation has the form y = mx. |
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Hint |
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11. |
Find the graph of y = x2 + 1. |
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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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12. |
What is the lowest point on the graph of y = x2 + 2? |
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A. |
(0, –2) |
B. |
(0, 2) |
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C. |
(0, 0) |
D. |
(2, 0) |
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Hint |
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13. |
Find a quadratic equation for the table. |
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A. |
y = 5x2 + 1 |
B. |
y = x2 – 5 |
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C. |
y = 5x2 – 1 |
D. |
y = 5x2 – 2 |
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Hint |
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14. |
Two friends are playing catch with a baseball. The ball's flight can be modeled by the equation
y = 1 + 0.6x – 0.08x2, in meters. What is the height of the ball at its highest point? |
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A. |
3.78 m |
B. |
1 m |
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C. |
2.13 m |
D. |
18.8 m |
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Hint |
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15. |
What is true of the second differences for the equation x2 – 6x + 12? |
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A. |
they are constant |
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B. |
they increase by 1 |
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C. |
they increase by 12 |
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D. |
they decrease by 1 |
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Hint |
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16. |
What is the relationship between constant second differences and the coefficient of the equation? |
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A. |
the second difference is 2 times the coefficient |
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B. |
the second difference is the same as the coefficient |
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C. |
the second difference is opposite the coefficient |
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D. |
the second difference is –2 times the coefficient |
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Hint |
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17. |
Tell whether the statement is sometimes true, always true, or never true for positive values of n. If it is sometimes true, state for what value it is true.
4n = 6,561. |
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A. |
sometimes true, n = 7 |
B. |
sometimes true, n = 8 |
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C. |
never true |
D. |
always true |
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Hint |
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18. |
Identify the growth factor in the equation p = 682,363 × 1.08n where p is the population and n is the number of years after 2001. |
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A. |
n |
B. |
1.08 |
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C. |
682,363 |
D. |
p |
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Hint |
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19. |
Choose the correct graph of y = 12x – 3x |
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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. |
Use you calculator's Table feature to approximate the solutions to the nearest hundredth.
x(x – 7) = 36 |
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A. |
x = 3.26, x = 6.31 |
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B. |
x = 11.00, x = –2.01 |
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C. |
x = 10.45, x = –3.45 |
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D. |
x = –15.96, x = –1.15 |
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Hint |
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