Use the image to answer the question.
A coordinate plane shows four quadrants with both the x-axis and the y-axis ranging from negative 10 to positive 10 in increments of 2. Two points are plotted and joined by a line. The plotted points are as follows: left parenthesis 4 comma 9 right parenthesis, left parenthesis 5 comma 0 right parenthesis. A line connects the two plotted points and extends beyond the points in both directions.
Find the slope of the line given its graph.
(1 point)
To find the slope of the line, we need to determine the change in y-values divided by the change in x-values.
The y-values of the two points are 9 and 0, and the x-values are 4 and 5.
So, the change in y-values is 0 - 9 = -9, and the change in x-values is 5 - 4 = 1.
Therefore, the slope of the line is -9/1 = -9.