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- 1. Multiple Choice
In the equation
y = x2 +5x +7, match each coefficient with its correct letter
a=0, b=5, c=7
a=1, b=5, c=7
a=7, b=5, c=1
- 2. Multiple Choice
What is this called?
A graph
A scatter plot
A linear function
A curve of best fit.
- 3. Multiple Choice
Given the following table of values, which column represents the input (x)?
Days
Money
Both Days and Money
Neither Days nor Money
- 4. Multiple Choice
Look at the data in this table.
Which equation most closely represents the line of best fit for this data?
- 5. Multiple Choice
Find the best fitting quadratic model for the data given.
y = 1.2x2 + 13x + 504.3
y = 12x2 + 13x + 504.3
y = .12x2 + 1.3x + 504.3
- 6. Multiple Choice
Using the quadratic curve of best fit, find the height of the ball when it traveled a distance of 10 feet.
12.8 ft
13.3 ft
11.1 ft
17 ft
- 7. Multiple Choice
Based on this pattern, would a Linear or Quadratic model be most appropriate?
Quadratic
Linear
- 8. Multiple Choice
If this is an equation for a curve of best fit, find the output (y) when the input (x) is 13:
y = 1.2x2 - 3.7x - 19
-51.5
135.7
154.7
183,8
- 9. Multiple Choice
find line of best fit using calculator through these points (0,0)(1,2) (3,5) (6,7)
y=65x+7
y=1.14x+.64
y=1.5x+64
- 10. Multiple Choice
The number of complaints a company received at the end of each of six weeks is shown in this table.
Based on the line of best fit, how many complaints should the company expect at the end of week 8?
75
91
96
110
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