Question 1: Plot the points (2, 4), (4, 6), (6, 8), and (8, 10) on the grid. Draw the line of best fit that visually represents the trend.

Answer: Line passing approximately through (1, 2) and (9, 10)

Question 2: Given the data points (1, 1), (3, 3), (5, 5), draw the line of best fit and estimate the value of y when x = 7.

Answer: y ≈ 7

Question 3: Construct a scatter plot with the following points: (2, 5), (3, 7), (4, 6), (5, 9). Draw the line of best fit and describe the trend.

Answer: Upward trend; line roughly through all points

Question 4: Plot the points (1, 2), (2, 4), (3, 6), (4, 8), (5, 10). Draw the line of best fit. What is the slope of this line?

Answer: slope = 2

Question 5: You are given a set of data points: (1, 3), (2, 5), (3, 7), (4, 9). Draw the line of best fit. What is the approximate y-value when x=6?

Answer: y ≈ 11

Question 6: Using the points (2, 4), (4, 8), (6, 12), draw a line of best fit and calculate its slope.

Answer: slope = 2

Question 7: Plot the points (3, 2), (4, 4), (5, 3), (6, 5). Draw the line of best fit and interpret the trend.

Answer: Slight upward trend with some variation

Question 8: Plot the points: (1, 4), (2, 4), (3, 4), (4, 4). Draw the line of best fit. What does this line tell you about the data?

Answer: Data is constant; line is horizontal at y=4

Question 9: Draw the line of best fit through the points (1, 2), (3, 4), (5, 6). Extend the line to x=7 and estimate y.

Answer: y ≈ 8

Question 10: Plot points (2, 3), (4, 5), (6, 7), (8, 9). Draw the line of best fit and identify a common mistake students make when drawing this line.

Answer: Incorrectly passing through the points; line should be roughly through all points