Desigualdades vistas en la recta numérica

Graphing Inequalities on a Number Line

Understanding the Graph of x < 4

• The speaker begins by illustrating a number line, marking key points: zero, one, two, three, four, and five. Negative numbers are also included: -1, -2, -3, and -4.

• To represent the inequality x < 4, a circle is drawn around the number four to indicate that it is not included in the solution set. A solid point would signify inclusion.

• The area representing all numbers less than four is colored blue on the number line. This visual representation helps clarify which values satisfy the inequality.

• The speaker emphasizes that all numbers less than four are included in this graphing method. For example, -2 is highlighted as being part of this range.