Line of Best Fit Worksheets
Interpret samples, tables and relationships while distinguishing observations from causal conclusions.
Before you begin
Read tables and graphs, count outcomes, and calculate with fractions.
Worked example
A fitted model is y = 6x + 10. Predict y when x = 3. This is an estimate from the model.
- Substitute the given x-value into the fitted equation.
Answer: 28
Check your result using the method in the example before moving to the next question.
Choose your level
- Easy: Read small counts and simple events.
- Medium: Compare groups or combine outcomes.
- Hard: Use multi-step summaries and justify the method.
Questions and answer calculations checked on 2026-09-17. How we check worksheets. Free for personal and classroom use.
Preview and print an easy set
Try six questions below, or choose a full set at your level.
1
A fitted model is y = 4x + 6. Predict y when x = 3. This is an estimate from the model.
2
A fitted model is y = 7x + 9. Predict y when x = 3. This is an estimate from the model.
3
A fitted model is y = 2x + 6. Predict y when x = 3. This is an estimate from the model.
4
A fitted model is y = 10x + 8. Predict y when x = 3. This is an estimate from the model.
5
A fitted model is y = 2x + 9. Predict y when x = 3. This is an estimate from the model.
6
A fitted model is y = 8x + 11. Predict y when x = 3. This is an estimate from the model.
Answer Key
1. 182. 303. 124. 385. 156. 35