Algebra 2 2-5 Guided Practice: Using Linear Models
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by Matthew Richardson
| 8 Questions
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Solve It! The graph shows the number of hours and the amount of money you earned each day last week.
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How many hours should you work to earn \$200? Enter only a number. Your response is only an approximation based on the trend of the data in the graph.
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What assumptions did you make to find your answer? Explain.
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Problem 1 Got It? The table shows the numbers of hours students spend online the day before a test and the scores on the test. Make a scatterplot of these data on the canvas. Use colors that stand out and include all relevant graph detail.

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Problem 1 Got It? How would you describe the correlation between the variables in the table?

Problem 1 Got It? Now use the embedded Desmos graphing utility below to plot the same data.

1. Click the + button and add a table.
2. Input the hours from the table into the x₁ column.
3. Input the test scores from the table into the y₁ column.
4. Zoom and pan your graph to establish a suitable viewing window. (You may use the wrench button for fine tuning.)
5. Take a screenshot of your scatterplot.

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Problem 1 Got It? Upload the screenshot you took of your Desmos scatterplot to the canvas.
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Problem 1 Got It? Reasoning: Using the graph from Problem 1, how much would you expect to pay for electricity if the average temperature was 70°F? Explain.

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Problem 2 Got It?
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Problem 3 Got It? Consider using the embedded Desmos graphing utility above.
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