Slope of a line of best fit from two points
Slope = change in y ÷ change in x between the two points.
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A line of best fit passes through (8, 44) and (13, 64), where x is the number of hours worked. What is its slope?
Answer: 4
A line of best fit passes through (7, 44) and (11, 60), where x is the number of weeks of training. What is its slope?
Answer: 4
A line of best fit passes through (6, 16) and (8, 20), where x is the number of minutes of practice. What is its slope?
Answer: 2
Tip: Slope = change in y ÷ change in x between the two points.
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