Point-Slope, Slope-Intercept, Scatter Plots

Which scatter plot shows both positive and linear association?

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Which equation written in slope-intercept form represents the trend line shown on the scatter plot below?

John and Bob each made a scatter plot to represent the data in the table as shown below.

Who made the scatter plot correctly?

• A. John only

• B. Bob only

• C. Both John and Bob

• D. Neither John nor Bob

Which of the following is a conclusion that you can make based on the table?

• As the average temperature increases, the snow cone sales increase.

• As the average temperature increases, the snow cone sales decrease.

• As the average temperature decreases, the snow cone sales increase.

• There is no association between the temperature and the number of snow cone sales.

A scatter plot was made to show the number of homes in a town based on the year. A trend line was drawn on the graph with an equation of y = 84x + 625 where x is the number of years since 1995 and y is the total number of homes in the town.

Predict the number of homes in the town in 2015.

Write an equation in slope intercept form (y=mx+b) for the trend line shown on the scatter plot.

Which of the following is NOT a true statement about the scatter plot?

• The association of the scatter plot is positive.

• The association of the scatter plot is linear.

• For every additional day of a trip, the weight of a suitcase increases 5 pounds.

• For every 5 additional days of a trip, the weight of a suitcase increases one pound.

Which of the scatter plots below shows a stronger association, and why?

• Scatter plot A; its slope is greater than B.

• Scatter plot A; its points of data are closer together than B.

• Scatter plot B; its slope is positive.

• Scatter plot B; it does not have any data points that are outliers.

A scatter plot was made to show the number of homes in a town based on the year. A trend line was drawn on the graph with an equation of y = 84x + 625 where x is the number of years since 1995 and y is the total number of homes in the town.

Predict what year the town would have 1,213 homes.

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase.

• As the temperature increases, the number of visitors increases.

• As the visitors increase, the temperature decreases.

• No correlation