Final answer:
The graph of the line y = -5 is a horizontal line at the negative value of -5 on the y-axis, with a slope of 0, and runs parallel to the x-axis.
Step-by-step explanation:
The graph of the line y = -5 represents a horizontal line on the Cartesian coordinate system. This is because the equation does not have an x variable; therefore, the value of y remains constant at -5 for all values of x. Unlike a vertical line which has an undefined slope, a horizontal line has a slope of 0. This means that there is no rise on the vertical axis as x increases, indicating that the line is completely flat and runs parallel to the x-axis. Therefore, the graph does not cross the x-axis, does not have a slope of -5, and is not a vertical line but rather a horizontal line at a negative value on the y-axis.