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1 | | Which of the following relations appear to be quadratic? |
| | A) | (37.0K)
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| | B) | (39.0K)
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| | C) | (40.0K)
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| | D) | (36.0K)
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2 | | Which one of the following data sets could best be modeled by a non-linear relation? |
| | A) | (8.0K)
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| | B) | (8.0K)
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| | C) | (7.0K)
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| | D) | (7.0K)
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3 | | Find the quadratic curve of best fit for the following data: (8.0K) |
| | A) | y = 4x2 -15x - 248 |
| | B) | y = 4x2 +15x + 248 |
| | C) | y = −248x2 - 15x + 4 |
| | D) | y = 225x - 3048 |
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4 | | The temperature outside Wes’ school was recorded in the following table: (11.0K)
Use a quadratic curve of best fit to estimate the temperature outside after 7 hours had elapsed. |
| | A) | 10oC |
| | B) | 7oC |
| | C) | 4oC |
| | D) | 1oC |
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5 | | Identify the axis of symmetry and vertex of the parabola shown: (37.0K) |
| | A) | Axis of symmetry: x = −3
Vertex: (−3, 0)
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| | B) | Axis of symmetry: x = −3
Vertex: (−3, −1)
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| | C) | Axis of symmetry: x = 3
Vertex: (3, −1)
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| | D) | Axis of symmetry: x = −3
Vertex: (−3, 1) |
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6 | | The x-intercept(s) of the parabola shown are: (38.0K) |
| | A) | x = 7 and x = −3 |
| | B) | x = −7 and x = 3 |
| | C) | x = −7 and x = −3 |
| | D) | x = −2 |
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7 | | Which of the graphs shown is a parabola with all of the following characteristics:
• maximum: (−3, 5)
• y-intercept: 3
• x-intercepts: −8 and 2
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| | A) | (38.0K)
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| | B) | (38.0K)
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| | C) | (37.0K)
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| | D) | (37.0K)
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8 | | The shape of a satellite dish can be modeled by the quadratic relation (0.0K) .
Using a graphing calculator, find the coordinates of the vertex.
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| | A) | (3, −2) |
| | B) | (3, 2) |
| | C) | (−2, 3) |
| | D) | (0, 3) |
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9 | | What are the missing values in the table shown? (9.0K) |
| | A) | A=5 B=1 C=2
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| | B) | A=−3 B=1 C=3
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| | C) | A=−1 B=1 C=−7
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| | D) | A=−3 B=5 C=3
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10 | | Given the data from a quadratic relation below: (4.0K)
Which of the following points could be added to preserve the quadratic relationship between x and y? |
| | A) | (0, 18) |
| | B) | (4, 0) |
| | C) | Neither (0, 18) nor (4, 0). |
| | D) | Both (0, 18) and (4, 0). |
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