Line of Best Fit Finding Slope

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month.  Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles? 

• A. 50 min
• B. 80 min
• C. 45 min
• D. 60 min

Based on the graph, if Joe earned $400, how many hours did he work?

• 25 hours
• 35 hours
• 45 hours
• 15 hours

Find the slope for the trend line using points (2,2) and (4,3)

• 2
• 1/2
• -2
• -1/2

A trend line that shows the most accurate relationship between x and y describes...

• linear regression
• no correlation
• trend line
• line of best fit

A trend line that shows the most accurate relationship between x and y describes...

• linear regression
• no correlation
• trend line
• line of best fit

Which choice best defines the term "linear function"?

• An equation that is the bomb diggity
• An equation that can be written in slope-intercept form
• An equation with an exponent in it
• An equation that has a slope but not a y-intercept

Which of the following could be a possible line of best fit for the data?

• y = -5/2x + 20
• y = -x + 19
• y = x + 20
• y = 2/3x + 15 

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• The more books students read, the lower their English grade.
• The more books students read, the higher their English grade.
• The fewer books students read, the higher their English grade. 
• No relationship exists between the number of books students read and their English grades. 

Which of the following could be a possible line of best fit for the data?

• y = 3x + 0
• y = 5/6x + 490
• y = -2x + 470
• non linear

What is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points
• To make it look like you know what you are doing