1. Lesson 4.3 Graphing Horizontal & Vertical Lines Mr. Beltz & Mr. Sparks

2. Horizontal Think Horizon…left & right.

3. Vertical Think of Mr. Beltz’s Vertical Jump in basketball. (Up & Down)

4. Linear equations Review All linear equations can be written in the form: Ax + By = C

5. Horizontal Lines Ax + By = C When A = 0 The equation reduces to By = C This results in a HORIZONTAL LINE (Example 1)

7. Vertical Lines Ax + By = C When B = 0 The equation reduces to Ax = C This results in a VERTICAL LINE (Example 2)

9. Summary If y = b Horizontal Line If x = a Vertical Line

10. Writing an Equation of a line. The graph is a vertical line. The x- coordinate is always -2. The equation of the line is x= -2 (Example 3a)

12. Write an Equation of a line. The graph is a horizontal line. The y- coordinate is always 4. The equation of the line is y=4. (Example 3b)

14. Practice Complete #1-8 on pages 216-217.