1. a) Scatterplot: Plot points (2,77), (5,92), (1,70), (0,63), (4,90), (2,75), (3,84).
b) Equation: y = 5.5x + 65.5
c) Grade expected: 98.5
d) No, because grades are capped at 100 and studying more than a certain point yields diminishing returns.
2. a) Scatterplot: Plot points (67,8.5), (70,9.5), (73.5,11), (75,12), (78,13), (66,8).
b) Equation: y = 0.5x - 25.5
c) Height expected: 73 inches
d) The slope represents the average increase in height (in inches) for each one-unit increase in shoe size.
3. Equation: y = 0.12x + 0.05
Tip expected: $1.31
Parent Tip: Review the logic above to help your child master the concept of line of best fit worksheet with answers.
