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1. |
Select the figure that has two lines of symmetry. |
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A. |
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B. |
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C. |
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D. |
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2. |
Find a number that when squared equals 484. |
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A. |
None of these is correct |
B. |
-22 only |
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C. |
22 only |
D. |
22 or -22 |
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3. |
The graph of a linear function is _______. |
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A. |
a curved line |
B. |
a horizontal line only |
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C. |
a straight line |
D. |
None of these is correct |
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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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5. |
Find the situation that involves a decreasing linear relationship and has direct variation. |
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A. |
A submarine that begins at the bottom of the ocean and is raised to the surface of the water at 15 meters per second. |
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B. |
An airplane that begins at 20,000 feet and descends for a landing on the ground at the airport. |
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C. |
The temperature that begins at 0°F at 6:00 a.m. rises 3°F every hour for 6 hours. |
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D. |
A bucket that begins at ground level and is lowered into a well at a rate of 1 foot per second. |
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Hint |
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6. |
Find the situation that is linear but does not have direct variation. |
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A. |
At the beginning of the summer, Dina had $200 in the bank. She started a job and deposited $10 per week. |
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B. |
At the beginning of the summer, Dina had $200 in the bank. She withdrew $30 to buy a new pair of shorts. |
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C. |
At the beginning of the summer, Dina had $0 in the bank. She started a job and deposited $10 per week. |
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D. |
At the beginning of the summer, Dina had $0 in the bank. She earned $50 mowing lawns the previous week and deposited the money in the bank. |
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Hint |
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7. |
Find the graph that is nonlinear. |
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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 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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9. |
What is the equation of a line that has a slope of 3 and passes through (–4, –3)? |
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A. |
y = 3x – 3 |
B. |
y = 3x – 9 |
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C. |
y = 3x + 9 |
D. |
y = 3x + 3 |
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Hint |
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10. |
In the relationship , why is y inversely proportional to x? |
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A. |
the product of xy is a constant, 8 |
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B. |
8 is divided into x |
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C. |
8 is divided into y |
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D. |
the relationship is undefined at x = 0 |
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Hint |
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11. |
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. |
always true |
B. |
sometimes true, n = 8 |
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C. |
sometimes true, n = 7 |
D. |
never true |
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Hint |
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12. |
Identify the decay factor in the equation p = 1,508,069 × 0.89n where p is the bacteria population and n is the number of days after a vaccine was administered. |
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A. |
n |
B. |
0.89 |
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C. |
1,508,069 |
D. |
p |
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Hint |
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13. |
Evaluate. |
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A. |
–2 |
B. |
3 |
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C. |
–3 |
D. |
2 |
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Hint |
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14. |
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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15. |
Use substitution or elimination to solve the system of equations. x + 2y = 6 x – 3y = –4 |
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A. |
(–2, 2) |
B. |
(–2, –2) |
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C. |
(2, –2) |
D. |
(2, 2) |
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Hint |
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16. |
Describe a figure that is reflected over two intersecting lines? |
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A. |
a translation of the original figure across the closest intersecting line |
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B. |
a rotation of the original figure about the intersection point |
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C. |
a translation of the original figure across the intersecting lines |
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D. |
a reflection of the original figure across any line through the intersection point |
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Hint |
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17. |
Andy drew a 6.3 cm line on his paper. He then decided to make it larger by a scale of 1.5. How long is his new line? |
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A. |
4.2 |
B. |
4.8 |
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C. |
9.45 |
D. |
7.8 |
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Hint |
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18. |
Write the expression in factored form.3x2 – 6x |
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A. |
3x (x + 2) |
B. |
3x (x – 6) |
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C. |
x (x – 6) |
D. |
3x (x – 2) |
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Hint |
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19. |
Multiply the pair of binomials.(8g + 2)( g + 5) |
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A. |
8g2 + 50g+ 10 |
B. |
8g2 + 42g+ 10 |
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C. |
8g2 + 7g + 10 |
D. |
8g2 + 10g + 42 |
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Hint |
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20. |
Multiply the pair of binomials.(4z – 2)(4z – 1) |
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A. |
16z2 + 12z – 2 |
B. |
16z2 – 12z + 2 |
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C. |
16z2 – 2 |
D. |
16z2 – 12z – 2 |
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Hint |
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