1. The problem is to find the definition of a graph. 2. In mathematics, a graph is a visual representation of a function or relation between variables. It usually involves plotting points or curves on a coordinate plane to show the relationship between the independent variable (commonly $x$) and the dependent variable ($y$). 3. For example, a graph of a function $y = f(x)$ consists of all points $(x,y)$ such that $y$ equals the function evaluated at $x$. 4. Graphs are useful tools for understanding the behavior of functions, including intercepts, slopes, maxima, minima, and overall shape. 5. In summary, the definition of a graph in math is the set of points or curves that visually represent the relationship between variables in a function or relation.