Non-negative numbers are numbers that are either positive or zero, and they are used in various mathematical contexts where negative values are not applicable. They form a subset of the real numbers and are crucial in fields like probability, statistics, and any scenario where negative quantities are non-physical or undefined.
Absolute value represents the distance of a number from zero on the number line, disregarding its sign. It is a fundamental concept in mathematics, often used to simplify expressions and solve equations involving real numbers.
Distance on a number line refers to the absolute difference between two points, which is always a non-negative value. This concept is foundational in understanding absolute value and serves as a basis for more complex distance calculations in coordinate systems.