1. READING The graph shows how many pages of her book Bridget read each day. a. Find the average number of pages Bridget read per day. b. On which days did Bridget read more pages than her daily average? c. If Bridget had been able to keep up the pace she had on day 3, how many days would it have taken her to reach page 140?
Problem of the Day

2. Section 2-4 Writing Linear Equations

3. Then Now Objectives You determined slopes of lines.
Write an equation of a line given the slope and a point on the line.
Write an equation of a line parallel or perpendicular to a given line.

4. Common Core State Standards
Content Standards
Common Core State Standards
A.SSE.1.b – Interpret complicated expressions by viewing one or more of their parts as a single entity. A.CED.2 – Create equations in two or more variable to represent relationships between quantities; graph equations on coordinate axes with labels and scales.
Mathematical Practices
2) Reason abstractly and quantitatively.

5. Slope-Intercept Form

6. Point-Slope Form

7. Write an equation in slope-intercept form for the line.
Example 1

8. Write an equation in slope-intercept form for the line.
Example 1

9. Write an equation in slope-intercept form for the line described
Write an equation in slope-intercept form for the line described. Slope 4 3 , passes through (0, 4)
Example 2

10. Write an equation in slope-intercept form for the line described
Write an equation in slope-intercept form for the line described. Slope 1 2 , passes through (2, 3)
Example 2

11. Write an equation in slope-intercept form for the line described
Write an equation in slope-intercept form for the line described. Slope − 3 5 , passes through (5, -2)
Example 2

12. Write an equation in slope-intercept form for the line described
Write an equation in slope-intercept form for the line described. Passes through (0, -6) and (-4, 10)
Example 3

13. Write an equation in slope-intercept form for the line described
Write an equation in slope-intercept form for the line described. Passes through (2, -3) and (-3, 7)
Example 3

14. Write an equation in slope-intercept form for the line described
Write an equation in slope-intercept form for the line described. Passes through (4, -9) and (2, -4)
Example 3

15. Parallel and Perpendicular Lines

16. Write an equation in slope-intercept form for the line that passes through (3, 7) and is perpendicular to the line with equation y = 3 4 x – 5.
Example 4

17. Write an equation in slope-intercept form for the line that passes through (3, -2) and is parallel to the line with equation y = -5x + 1.
Example 4

18. p.82 #47, 49 p.87 #12, 18, 24, 26, 27, 32 – 34, 47, 50
Homework