1. What can I expect to make on a test if I do no homework? Homework Strike!!

2. In this lesson you will learn how to interpret the equation of a linear model by calculating the y-intercept using the slope-intercept equation.

3. Let’s Review slope y-intercept (x,y)

4. Let’s Review A Common Mistake 4=23+b 4=6+b

5. Let’s Review Core Lesson Homework completed 100 90 80 70 60 50 40 30 20 10 1 2 3 4 5 6 7 8 9 10 Test score (2,30) (8,90) Find the rate of change (slope) of the line 1 2 Substitute the m, x, & y into the y=mx+b 3 Solve for b.

6. Let’s Review Core Lesson 1 2 3 Homework completed 100 90 80 70 60 50 40 30 20 10 1 2 3 4 5 6 7 8 9 10 Test score (2,30) (8,90)

7. Let’s Review Core Lesson I can expect a grade of 10 on my test if I don’t do any homework! I better get started on my homework!

8. In this lesson you learned how to interpret scatter plots by finding the y-intercept using the slope-intercept equation.

9. Let’s Review Guided Practice Study Time (min) Response Speed (sec) 100 90 80 70 60 50 40 30 20 10 1 2 3 4 5 Find the y-intercept using the slope- intercept equation of the line of best fit.

10. Let’s Review Extension Activities Find a data table in your local newspaper that compares two pieces of data. Construct a scatter plot using the data found. Informally draw the line of best fit. Find the y-intercept for this data using the slope-intercept equation of a line. Explain what the y-intercept represents within the context of the problem.

11. Let’s Review Extension Activities Survey 10 people and construct your own scatter plot with the results. Informally draw the line of best fit. Use this line to find the y-intercept for this set of data using the slope intercept equation of the line. State the meaning of this y-intercept within the context of the problem.

12. Let’s Review Quick Quiz Determine the y-intercept of the line of best fit using the slope- intercept equation of a line. Side length of a square 100 90 80 70 60 50 40 30 20 10 1 2 3 4 5 6 7 8 9 10 Perimeter of a square

13. Let’s Review Quick Quiz Find the y-intercept using the slope- intercept equation and line of best fit. What does the y-intercept mean for this graph? Minutes at Lunch Food Remaining (ounces) 25 20 15 10 5 4 8 12 16 20