A vertical line is a straight line that goes up and down, parallel to the y-axis on a coordinate plane. It has the equation x = k, where k is the x-coordinate of the points on the line.

**Direction:**A vertical line goes straight up and down.**Equation:**The equation of a vertical line is always in the form x = k, where k is the x-coordinate of any point on the line.**Slope:**The slope of a vertical line is undefined because the rise (change in y) is 0, and division by 0 is undefined.**Parallel:**All vertical lines are parallel to each other.

To graph a vertical line with equation x = k, locate the value of k on the x-axis and draw a straight line passing through that point. The line will be parallel to the y-axis.

To understand and work with vertical lines, make sure to:

- Understand the concept of a vertical line and its characteristics.
- Learn to identify the equation of a vertical line in the form x = k.
- Practice graphing vertical lines on a coordinate plane.
- Understand the relationship between vertical lines and the y-axis.
- Be familiar with the concept of undefined slope for vertical lines.

Remember to practice graphing vertical lines and working with their equations to strengthen your understanding of this topic.

.Study GuideGraphs Activity LessonVenn Diagrams Worksheet/Answer key

Graphs Worksheet/Answer key

Graphs Worksheet/Answer key

Graphs Worksheet/Answer key

Graphs Worksheet/Answer key

Graphs Worksheet/Answer key

Graphs Worksheet/Answer key

Single Line Graph Worksheet/Answer key

Single Line Graph Comprehension Worksheet/Answer key

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Data Analysis and Probability (NCTM)

Formulate questions that can be addressed with data and collect, organize, and display relevant data to answer them.

Select, create, and use appropriate graphical representations of data, including histograms, box plots, and scatterplots.

Select and use appropriate statistical methods to analyze data.

Discuss and understand the correspondence between data sets and their graphical representations, especially histograms, stem-and-leaf plots, box plots, and scatterplots.