Graphing Single–Variable Inequalities

Graphing Single–Variable Inequalities

You need to use a number line to graph single-variable inequalities. Learn how to graph an inequality with one variable.

Step by step guide to graphing single–variable inequalities

  • Inequality is similar to equations and uses symbols for “less than” (\(<\)) and “greater than” (\(>\)).
  • To solve inequalities, we need to isolate the variable. (like in equations)
  • To graph an inequality, find the value of the inequality on the number line.
  • For less than or greater than draw open circle on the value of the variable.
  • If there is an equal sign too, then use filled circle.
  • Draw a line to the right or to the left for greater or less than.

Example 1:

Draw a graph for \(x \ > \ 4 \)

Solution:

Since the variable is greater than \(4\), then we need to find \(4\) and draw an open circle above it. Then, draw a line to the right.

Example 2:

Draw a graph for \(x>2\)

Solution:

Since, the variable is greater than \(2\), then we need to find \(2\) and draw an open circle above it. Then, draw a line to the right.

Example 3:

Graph this inequality. \(x<5\)

Solution:

Exercises

Draw a graph for each inequality.

1. \(\color{blue}{– 2 > x}\)

2. \( \color{blue}{x ≤ – 5}\)

3. \( \color{blue}{x > 7}\)

4. \(\\ \color{blue}{1.5 > x}\)

Download Graphing Single–Variable Inequalities Worksheet

Answers

1. \(\color{blue}{ – 2 > x }\)

2. \(\color{blue}{ x ≤ -5 }\)

3. \(\color{blue}{ x > 7 }\)

4. \(\color{blue}{ -1.5 > x }\)

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