1. Holt Algebra 1 5-4 The Slope Formula Students will be able to: Find slope by using the slope formula. Learning Target

2. Holt Algebra 1 5-4 The Slope Formula Find the slope of the line that contains (2, 5) and (8, 1).

3. Holt Algebra 1 5-4 The Slope Formula Find the slope of the line that contains (–2, –2) and (7, –2).

4. Holt Algebra 1 5-4 The Slope Formula Find the slope of the line that contains (5, –7) and (6, –4).

5. Holt Algebra 1 5-4 The Slope Formula Find the slope of the line that contains and

6. Holt Algebra 1 5-4 The Slope Formula The graph shows a linear relationship. Find the slope.

7. Holt Algebra 1 5-4 The Slope Formula The table shows a linear relationship. Find the slope.

8. Holt Algebra 1 5-4 The Slope Formula The graph shows a linear relationship. Find the slope.

9. Holt Algebra 1 5-4 The Slope Formula The graph shows a linear relationship. Find the slope.

10. Holt Algebra 1 5-4 The Slope Formula The graph shows the average electricity costs (in dollars) for operating a refrigerator for several months. Find the slope of the line. Then tell what the slope represents.

11. Holt Algebra 1 5-4 The Slope Formula Find the slope of the line described by 4x – 2y = 16.

12. Holt Algebra 1 5-4 The Slope Formula HW:p.324/11-23,26-31,34,37, 38-48 even

13. Holt Algebra 1 5-4 The Slope Formula Warm Up Add or subtract. 1. 4 + (–6) 2. –3 + 5 3. –7 – 7 4. 2 – (–1) Find the x- and y-intercepts. 5. x + 2y = 8 6. 3x + 5y = –15 x-intercept: –5; y-intercept: –3 x-intercept: 8; y-intercept: 4 –2 2 3 –14

14. Holt Algebra 1 5-4 The Slope Formula Graph the function – 3x + 2 = y.