Unit 4, Lesson 14, Grade 8 icon
Unit 4, Lesson 14

The Graph of a Linear Equation--Horizontal and Vertical Lines

EngageNY 45 min(s)

Students graph linear equations in standard form, that produce a horizontal or a vertical line. The goal of this lesson is for students to know that the graph of an equation in the form of x = c or y = c, where c is a constant, is the graph of a vertical or horizontal line, respectively. In order to show this, the lesson begins with linear equations in two variables, where one of the coefficients is equal to zero. The reason behind this is that students know an ordered pair (x, y) is a point on a coordinate plane, as well as a solution to the equation.

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