Graphing is a mathematical tool used to represent data visually. It allows us to see the relationship between two or more variables and identify patterns or trends. One common type of graph is the linear graph, which is used to plot data points that have a linear relationship. The equation for a linear graph is y = mx + b, where m is the slope and b is the y-intercept.
In the case of the equation y = 5, the slope is 0 and the y-intercept is 5. This means that the graph of this equation will be a horizontal line that passes through the point (0, 5). Horizontal lines are often used to represent constants, which are values that do not change. In this case, the constant is 5.