Convert to Interval Notation x<4

Problem

x<4

Solution

1. Identify the inequality symbol. The symbol < represents "less than," which means the values of x extend infinitely to the left on the number line.

2. Determine the lower bound. Since x can be any value smaller than 4 without a minimum limit, the lower bound is negative infinity, denoted as −∞

3. Determine the upper bound. The inequality states that x must be less than 4 so the upper bound is 4

4. Select the correct brackets. Use a parenthesis () for −∞ because infinity is never included. Use a parenthesis ) for 4 because the inequality is "strict" (it does not include the equal sign).

Final Answer

x<4⇒(−∞,4)

Want more problems? Check here!