After grading the most recent chapter test, a science teacher asks twelve of his 10th grade summer school students how long they studied for the test. Their answers, as well as their corresponding test grades, were recorded on a table and placed on a scatter plot. Use the line of best fit shown in the scatter plot to make a conjecture about the number of hours studied versus the resulting test grade. Answer in complete sentences.
The more time that they spent studying the higher their test grade was.