Worksheets · Algebra 1

Scatter plot worksheet for Algebra 1

A scatter plot shows two measurements for each thing. If the points drift upward the association is positive, downward and it is negative, and the line of best fit is the straight line that runs through the middle of them.

Also taught in Statistics, at its own level and with its own examples.

Select your difficulty

Pick more than one for a sheet that mixes them.

The preview can look cramped on a phone. The PDF and printed sheet come out normal.

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

Sigma Prep · sigmaprep.io/worksheets

Name

Scatter Plots

Date Period

Answer each question. Some give you the plot, others the line.

  1. Interpret a scatter plot and its line

    The line of best fit is y=−x+11. Predict y when x=10.
  2. The line of best fit is y=x+1. Predict y when x=10.
  3. The line of best fit is y=2x+1. Predict y when x=11.
  4. The line of best fit is y=−2x+12. Predict y when x=12.
  5. The line of best fit is y=2x+1. Predict y when x=15.
  6. The line of best fit is y=x+3. Predict y when x=15.
  7. The line of best fit is y=−x+8. Predict y when x=11.

  1. Describe the association and correlation

    Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xy
  2. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xy
  3. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xy
  4. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xy
  5. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xy
  6. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xy
  7. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xy

  1. Decide linear or nonlinear, or choose a model

    Describe the correlation: positive, negative or none, and linear or nonlinear.xy
  2. Describe the correlation: positive, negative or none, and linear or nonlinear.xy
  3. Describe the correlation: positive, negative or none, and linear or nonlinear.xy
  4. Describe the correlation: positive, negative or none, and linear or nonlinear.xy
  5. Describe the correlation: positive, negative or none, and linear or nonlinear.xy
  6. Describe the correlation: positive, negative or none, and linear or nonlinear.xy

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

Sigma Prep · sigmaprep.io/worksheets

Name

Scatter PlotsAnswer keyVersion 1

Date Period

Answer each question. Some give you the plot, others the line.

  1. Interpret a scatter plot and its line

    The line of best fit is y=−x+11. Predict y when x=10.1
  2. The line of best fit is y=x+1. Predict y when x=10.11
  3. The line of best fit is y=2x+1. Predict y when x=11.23
  4. The line of best fit is y=−2x+12. Predict y when x=12.−12
  5. The line of best fit is y=2x+1. Predict y when x=15.31
  6. The line of best fit is y=x+3. Predict y when x=15.18
  7. The line of best fit is y=−x+8. Predict y when x=11.−3

  1. Describe the association and correlation

    Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xyStrong positive
  2. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xyWeak negative
  3. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xyWeak positive
  4. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xyStrong negative
  5. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xyWeak negative
  6. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xyStrong positive
  7. Describe the association in the scatter plot: strong or weak, positive or negative, or no association.xyWeak negative

  1. Decide linear or nonlinear, or choose a model

    Describe the correlation: positive, negative or none, and linear or nonlinear.xyPositive, linear
  2. Describe the correlation: positive, negative or none, and linear or nonlinear.xyNeither positive nor negative, nonlinear
  3. Describe the correlation: positive, negative or none, and linear or nonlinear.xyNeither positive nor negative, nonlinear
  4. Describe the correlation: positive, negative or none, and linear or nonlinear.xyNegative, nonlinear
  5. Describe the correlation: positive, negative or none, and linear or nonlinear.xyNegative, linear
  6. Describe the correlation: positive, negative or none, and linear or nonlinear.xyPositive, nonlinear

Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep

How to do these

The line of best fit is y=3x+2. Predict y when x=10.

  1. Put 10 in for x.
  2. 3 times 10, plus 2.

The answer is 32.

Where students go wrong

Calling a cloud with no trend negative because a few points sit low on the right. Positive or negative needs the whole cloud to drift one way; if it does not, there is no association.

Also called correlation.

What you can put on this worksheet

The association, and a prediction
Does the scatter plot show a positive or a negative association? — a scatter plot of 7 points → Negative
Association and correlation
What kind of association does the scatter plot show: positive, negative, or none? — a scatter plot of 11 points → Negative
Make a scatter plot from a table
Make a scatter plot and describe the association.
x12192417156y4187236 — blank axes for a scatter plot → Negative association
Draw a line of fit by eye and write it
Make a scatter plot, draw a line that fits the data, and write its equation.
x1234578910y262523222019171716 → About y=−x+26
Linear or nonlinear, and which model fits
Describe the correlation: positive, negative or none, and linear or nonlinear. — a scatter plot of 12 points → Negative, nonlinear
Linear, quadratic or exponential
Decide whether a line, a parabola or an exponential curve fits best, and give the direction if there is one. — a scatter plot of 10 points → Quadratic

Questions about these worksheets

Yes. Every scatter plot sheet is free to print and free to download as a PDF. There is no account to make, no email to hand over and no limit on how many you take.

Yes. The answer key prints on a second page, and you can choose whether it shows each question beside its answer or just the answers in a list.

Yes. Print straight from the page, or download the PDF and print that. The sheet is laid out for paper rather than squeezed off a screen, so there is room to work under each question, and the answer key comes out on its own page.

Algebra 1 is usually taken around 8th or 9th grade, though schools vary and plenty of students meet it earlier or later. Pick the difficulty rather than the grade: the easy level suits a first lesson on it, the hard level suits review before a test.

Yes, as many as you like. The questions are built fresh each time rather than picked from a fixed set of files, so pressing Generate gives a new sheet. That is what you want for a second class, a retake, or two students sitting next to each other.

That is the closest comparison, and Kuta Software is good software. It is also paid software you install on a computer. These worksheets run in a browser tab for free, with no account and nothing to install. Like Kuta, the scatter plot questions are generated when you ask for them rather than pulled from a fixed set of files, so two classes never get the same sheet, and the answer key comes with it.

Yes. There are three levels, and you can tick more than one for a sheet that mixes them, in which case the questions come out easiest first. The harder levels are not just larger numbers: they ask for something the easy ones do not.

You pick from 6: the association, and a prediction, association and correlation, make a scatter plot from a table, draw a line of fit by eye and write it, linear or nonlinear, and which model fits and linear, quadratic or exponential. Tick as many as you want and set how many of each, or let it spread them evenly.

Calling a cloud with no trend negative because a few points sit low on the right. Positive or negative needs the whole cloud to drift one way; if it does not, there is no association.