1. On this graph, what do the independent and dependent variables represent?

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   The independent variable represents the lead actor's pay, and the dependent variable represents profit of the movie.

2. What term is used to describe the red line on the graph?

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   Line of best fit.

3. What needs to be true of a line of best fit?

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   Answers vary; encourage students to discuss that a line of best fit should include equal distribution of points around the line and should follow the trend of the data.

4. Is a correlation reflected in the data? If so, is it positive or negative? How do you know?

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   A positive correlation is reflected. Possible explanation: as lead actor pay increases, the profit of the movie increases.

5. Will the slope of the line be positive or negative? How do you know?

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   Positive, because the line is increasing from left to right.

6. Look at points A and B. What are their coordinates?

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   A=(1, 2) and B=(5, 4)​.

7. What is the slope of the line? How do you know?

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   \frac{1}{2}, because slope = \frac{y_2-y_1}{x_2-x_1}​ = \frac{4-2}{5-1}=\frac{2}{4}=\frac{1}{2}​.

8. Using point A and the slope, what is the y-coordinate of the y-intercept of the line? How do you know?

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   1.5, because y=mx+b, and using the coordinates of point A gives you 2=\frac{1}{2}(1)+b, so b=1.5.

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