1. Writing Equations in Point-Slope Form
LESSON 4–3
Writing Equations in Point-Slope Form

2. Write an equation of the line that passes through the given point and has the given slope. (5, –7), m = 3
5-Minute Check 1

3. Write an equation of the line that passes through the given point and has the given slope. (1, 5),
5-Minute Check 2

4. Which equation is the line that passes through the points (6, –3) and (12, –3)?
5-Minute Check 3

5. Which equation is the line that passes through the points (9, –4) and (3, –6)?
5-Minute Check 4

6. Identify the equation for the line that has an x-intercept of –2 and a y-intercept of 4.
A. y = –2x + 4
B. y = 2x + 4
C. y = 2x – 4
D. y = 4x – 2
5-Minute Check 5

7. Which is an equation of the graph shown?B.
C. y = –2x + 3
D. y = 2x + 3
5-Minute Check 5

8. Mathematical Processes A.1(B), A.1(F)
Targeted TEKS
A.2(B) Write linear equations in two variables in various forms, including y = mx + b, Ax + By = C, and y - y1 =m(x - x1), given one point and the slope and given two points.
A.2(C) Write linear equations in two variables given a table of values, a graph, and a verbal description.
Also addresses A.3(A).
Mathematical Processes
A.1(B), A.1(F)
TEKS

9. point-slope form
Vocabulary

10. Concept 1

11. Write and Graph an Equation in Point-Slope Form
Write an equation in point-slope form for the line that passes through (–2, 0) with slope
Example 1

12. Graph the equation Write and Graph an Equation in Point-Slope Form
Example 1

13. Write the point-slope form of an equation for a line that passes through (4, –3) with a slope of –2.
Example 1

14. Concept 2

15. Find an Equation of a Line
Example 2

16. Find an Equation of a Line
Example 2

17. Write y – 3 = 2(x + 4) in standard form.
Example 2

18. Write 3x + 2y = 6 in slope-intercept form.
Example 3

19. A. GEOMETRY The figure shows trapezoid ABCD with bases AB and CD.
Point-Slope Form and Standard Form
A. GEOMETRY The figure shows trapezoid ABCD with bases AB and CD.
Write an equation in point-slope form for the line containing the side BC.
___
Example 4

20. B. Write an equation in standard form for the same line.
Point-Slope Form and Standard Form
B. Write an equation in standard form for the same line.
Example 4

21. A. The figure shows right triangle ABC
A. The figure shows right triangle ABC. Write the point-slope form of the line containing the hypotenuse AB.
Example 4

22. B. The figure shows right triangle ABC
B. The figure shows right triangle ABC. Write the equation in standard form of the line containing the hypotenuse.
Example 4

23. Writing Equations in Point-Slope Form
LESSON 4–3
Writing Equations in Point-Slope Form