Which graph shows a line of best fit for the scatter plot?

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many chapters would be in a book with 180 pages.

Based on this scatterplot, approximate what score should a student who attended class 22 days expect to receive on the exam?

What is the equation of the line of best fit

What is the equation of the line of best fit?

Describe the correlation, if the correlation coefficient is r = -0.26

Estimate the correlation coefficient for this scatterplot.

Estimate the correlation coefficient for this scatterplot.

Average time spent listening to music per day and average time spent watching TV per day.  $$r=-.17$$  

Score on science exam and number of words written on the essay question.  $$r=.28$$  

Car weight and distance traveled using a full tank of gas.  $$r=-.86$$  

Number of steps taken per day and number of kilometers walked per day. $$r=.92$$