If the association is linear, (a) use a graphing calculator to find a linear function that...

If the association is linear, (a) use a graphing calculator to find a linear function that models the relation (study time, grade), then (b) graph the data and the line on the same screen. (c) Does the correlation appear weak or strong?

To determine the value of doing homework, a student in college algebra collects data on the time spent by classmates on their homework in preparation for a quiz. Her data is entered in the table shown. (a) Use a graphing calculator to draw a scatterplot of the data. (b) Does the association appear linear or nonlinear? (c) Is the association positive or negative?