What is a number line ? Definition and examples.

A number line is a line, ray, or line segment on which every point is assigned a real number.

Number lines


Above, you can three number lines.

  • A line on which every point has been assigned a real number

  • A segment on which every point has been assigned a real number.

  • Finally, a ray on which every point has been assigned a real number.

Notice that although one of the number lines is made with a segment, it does not have just four points. There are lots of points between 1 and 2, 2 and 3, and 3 and 4. Similarly, there are lots of points between the numbers that you see for the ray and the line.

Recent math words

  1. What does Average Mean ? Definition and Examples

    Aug 19, 19 11:09 AM

    What does average mean ? The average is a single number used to represent ...

    Read More

  2. Crystal Clear Way to Define Angle

    Aug 12, 19 12:28 PM

    Here is how to define angle the easiest way possible. An angle is ...

    Read More