Algebra Lesson 3.4: Graphing Vertical and Horizontal Lines

Practice Exercises:

For each of the following equations, decide whether the graph is a vertical line, horizontal line, or neither

1. $x = 2$

2. $y = x$

3. $y= 1$

Graph each of the following equations

4. $y=\frac{1}{2}$

5. $x = -3$

Use the following graph two answer Exercises 6 and 7

6. What is the equation of the vertical red line?

7. What is the equation of the horizontal green line?

Review Exercise:

8. Which of the two lines in the graph above is the graph of a function? (Review the vertical line test for functions)