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Lesson 4.3 Graphing Horizontal & Vertical Lines. Mr. Beltz & Mr. Sparks. Horizontal. Think Horizon…left & right. Vertical. Think of Mr. Beltz’s Vertical Jump in basketball. (Up & Down). Linear equations Review. All linear equations can be written in the form: Ax + By = C.
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Lesson 4.3Graphing Horizontal & Vertical Lines Mr. Beltz & Mr. Sparks
Horizontal • Think Horizon…left & right.
Vertical • Think of Mr. Beltz’s Vertical Jump in basketball. (Up & Down)
Linear equations Review • All linear equations can be written in the form: Ax + By = C
Horizontal Lines Ax + By = C When A = 0 The equation reduces to By = C This results in a HORIZONTAL LINE (Example 1)
Vertical Lines Ax + By = C When B = 0 The equation reduces to Ax = C This results in a VERTICAL LINE (Example 2)
Summary • If y = b Horizontal Line • If x = a Vertical Line
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)
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)
Practice • Complete #1-8 on pages 216-217.