This graph shows the final exam scores of a group of students along with the number of absences each student had that year. Use it to answer the question below.
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Question 1
1.
Plot all your data values using a table with the numbers of absences as your x-values and the final exam scores as your y-values.
We have released a new and improved Graphing question type! Students will no longer be able to answer this question.
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Question 2
2.
Find the line of best fit of your data using desmos.
Write the equation for your line of best fit (round to two decimal places).
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Question 3
3.
What does the slope mean in context of this scenario?
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Question 4
4.
What does the y-intercept mean in the context of this scenario?
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Question 5
5.
Using the given model (your equation for your line of best fit), what would the estimated final exam score be for Student W who missed 9 days of school?
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Question 6
6.
Salina is having a surprise party for her friend Ernie. The table shows how many balloons she has been able to blow up by the end of each 10-minute segment.
Make a scatter plot of the data with time on the x axis and number of balloons on the y axis.
We have released a new and improved Graphing question type! Students will no longer be able to answer this question.
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Question 7
7.
Write the equation for the line of best fit.
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Question 8
8.
Use the equation for the line of best fit to estimate: How many balloons will she have blown up after 70 minutes?
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Question 9
9.
Read each statement about the provided scatter plot. Decide if you agree or disagree about the statement and sort based on your decision.
The scatter plot shows the sale price of several food items, y, and the cost of the ingredients used to produce those items, x, as well as a line that models the data. The line is also represented by the equation y = 3.48x + 0.76.
The predicted ingredient cost of an item that has a sale price of $7.50 is $1.94.
The slope in this linear model means that as the ingredient price increases by $1, the sales prices decreases by about $3.48.
The y-intercept in this linear model means that when the cost of ingredients is $0, the sales prices would be $0.79.
The predicted sale price of an item that has ingredients that cost $1.50 is $5.25.
The slope of the linear model is 0.76.
Agree
Disagree
If you have finished all of the questions above, try the first two questions on the worksheet linked here.