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1. |
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. |
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C. |
8y = - 6x |
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D. |
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Hint |
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2. |
Use the scatter plot to predict the mileage of an engine with 250 horsepower. |
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A. |
25 |
B. |
20 |
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C. |
12 |
D. |
10 |
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Hint |
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3. |
Simplify (7a4b) (8a7b6). |
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A. |
56a11b7 |
B. |
15a28b6 |
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C. |
15a11b7 |
D. |
56a28b6 |
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Hint |
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4. |
Find  |
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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. |
The graph of a linear function is _______. |
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A. |
a horizontal line only |
B. |
a curved line |
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C. |
a straight line |
D. |
None of these is correct |
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Hint |
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6. |
Find the table that represents a graph with direct variation. |
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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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7. |
What is the equation of a line that has a slope of –1 and passes through (–2, 0)? |
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A. |
y = –2x + 1 |
B. |
y = –x + 2 |
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C. |
y = –x – 1 |
D. |
y = –x – 2 |
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Hint |
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8. |
Which three points are collinear? |
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A. |
(–5, 2), (1, 1), (4, 4) |
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B. |
(3, –1), (2, 5), (2, –3) |
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C. |
(–4, 4), (0, –4), (–1, –2) |
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D. |
(1, 2), (–3, –2), (–2, –4) |
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Hint |
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9. |
Write the equation in slope-intercept form.
–6x = –10 – 2y |
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A. |
y = 3x – 5 |
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B. |
y = 3x + 8 |
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C. |
–6x + 2y + 10 = 0 |
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D. |
y + 8 = 3(x + 1) |
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Hint |
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10. |
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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11. |
What is the new equation if the graph y = 2x3 – 6x2 is moved down 1 unit? |
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A. |
y = x3 – 6x2 |
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B. |
y = 2x3 – 6x2 + 1 |
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C. |
y = 2x3 – 6x2 – 1 |
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D. |
y = 2x3 – 5x2 |
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Hint |
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12. |
What is the reciprocal of –20? Evaluate it in decimal form. |
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A. |
–0.02 |
B. |
–0.20 |
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C. |
–0.05 |
D. |
–0.50 |
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Hint |
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13. |
In the relationship  , why is y inversely proportional to x? |
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A. |
the relationship is undefined at x = 0 |
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B. |
the product of xy is a constant, 8 |
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C. |
8 is divided into y |
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D. |
8 is divided into x |
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Hint |
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14. |
How does b affect graphs of equations in the form of  ? |
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A. |
positive values of b move the graph to the left, negative values move it to the right |
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B. |
b affects the length of the graph |
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C. |
negative values of b move the graph to the left, positive values move it to the right |
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D. |
b affects the width of the graph |
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Hint |
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15. |
Consider the following conjecture. If an even number is written 2k, where k is a whole number, then 2k + 1 must be an odd number. What can be your next course of action in dealing with this conjecture? |
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A. |
test every possible case to prove the conjecture |
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B. |
find a counterexample to disprove the conjecture |
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C. |
all answers are correct |
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D. |
develop an argument to prove the conjecture |
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Hint |
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16. |
Which number is not equal to the other three? |
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A. |
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B. |
2-2 |
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C. |
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D. |
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Hint |
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17. |
The population of fish in Mark's lake is 500 this year. If the population increases by 6.9% a year, what number can Mark multiply this year's population by to estimate the fish population in the lake next year? |
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A. |
1.69 |
B. |
6.9 |
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C. |
0.0931 |
D. |
1.069 |
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Hint |
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18. |
Use the following table to find the amount of medicine remaining in the bloodstream after n hours. |
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A. |
0.85n |
B. |
425 × 0.85n |
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C. |
500 × 0.85n |
D. |
0.85 × 500n |
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Hint |
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19. |
Which curve represents exponential decay? |
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A. |
curve d |
B. |
curve a |
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C. |
curve b |
D. |
curve c |
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Hint |
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20. |
Evaluate.  |
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A. |
5 |
B. |
–6 |
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C. |
8 |
D. |
6 |
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Hint |
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