Consider this scatter plot. Test Scores in Relation to Homework
Hours of Homework

(a) Is the relationship linear or not linear? Justify your response.
(b) Is the relationship increasing or decreasing? Find the slope and use it to help justify your answer.
(c) Paul uses the function y = 7x + 30 to model the situation. What score does Paul’s model predict for 3
hours of homework? Hint: It’s _not_ asking you to use the graph.
(d) Describe what the number 30 in Part (c) mean in the context of the situation? Hint: Think about what
kind of function equation you have in Part B.