The distance between two points on the real number line is found by taking the absolute value of the difference between those points. So, for points $a = 13$ and $b = 0$, the distance $d$ is:

$d = |a - b| = |13 - 0| = |13| = 13$

Thus, the distance between 13 and 0 on the real number line is 13.

Would you like more details or have any questions?

Here are related questions to explore:

1. How do you find the distance between any two points on the real number line?
2. What is the formula for finding the distance between points in a 2D coordinate plane?
3. How do absolute values impact distance calculations on a number line?
4. How do you calculate the midpoint between two points on a number line?
5. What would be the distance between -13 and 0 on the real number line?

Tip: For any two points on a line, taking the absolute difference ensures the distance is always positive.