Question

How can a number line be used in real life?

Answer 1

Hint: In the question above, we have been asked to discuss and describe how a number line can be used in real life, for this, we need to remember our day-to-day work and where the lines can be used. In advanced mathematics, the expressions real number line, or real line are typically used to indicate the above-mentioned concept that every point on a straight line corresponds to a single real number, and vice versa.

Complete step-by-step solution:
We have been using the number line in our day to day lives without realising it, for example,
A ruler is essentially a real-world example of part of the Real number line, allowing you to estimate measurements.
We use number lines in our lives ALL the time. When we drive, a road is just a gigantic number line.
We listen to our GPS and we know about how far $\dfrac{1}{4}$ mile is to our next turn.
We use number lines when we measure length, or even as we measure capacity in a liquid measuring cup.
A reading number line: How many pages have been read of your book if you stop in the middle of page \[39\]

Note: In math, a number line can be defined as a straight line with numbers placed at equal intervals or segments along its length. A number line can be extended infinitely in any direction and is usually represented horizontally. In elementary mathematics, a number line is a picture of a graduated straight line that serves as an abstraction for real numbers, denoted by $R$. Every point of a number line is assumed to correspond to a real number, and every real number to a point.