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In mathematics, an **inequality** is a statement that compares two values or expressions to show that one is larger or smaller than the other. Unlike equations, which show that two expressions are equal, inequalities use symbols to indicate a relationship of difference. The most common inequality symbols are:

• \(>\) (greater than)
• \(<\) (less than)
• \(\geq\) (greater than or equal to)
• \(\leq\) (less than or equal to)

When you see an inequality like \(0 > -100\), it tells you that the number on the left is larger than the number on the right. Inequalities are important in various mathematical concepts, from simple comparisons to complex functions in calculus. Understanding them helps you solve real-world problems like determining limits, sizes, and rates.

A **number line** is an excellent tool for visualizing mathematical concepts such as inequalities. It is a straight line with numbers placed at equal intervals. Zero acts as the central reference point, with positive numbers to the right and negative numbers to the left.
Each step to the right on a number line indicates increasing numerical value, while each step to the left shows a decrease. This visual layout helps to compare numbers and understand their relationships at a glance.
In the case of the inequality \(0 > -100\), plotting these numbers on a number line helps reveal that 0 is indeed located to the right of -100. This position means 0 is greater than -100. Number lines make it easier to see how numbers relate to each other spatially, facilitating quicker understanding of comparisons.

The **greater than** comparison is a crucial concept in math. It directly shows one value is larger than another. Symbolized by \(>\), it indicates the first number is more significant or larger compared to the second number listed. To remember this, visualize the open side of the symbol pointing to the smaller number, indicating that it can "hold" the larger number.
For example, in the inequality \(0 > -100\), the zero is the larger number, hence it is placed at the wider opening of the symbol. Understanding this concept will help you solve many mathematical problems by identifying and comparing quantities accurately.
In everyday use, greater than comparisons assist in making decisions, such as choosing a larger quantity or comparing costs. Being comfortable with this concept can significantly enhance numeracy skills, providing a solid foundation for handling real-life situations involving mathematical reasoning.