A line is plotted on a coordinate plane. The x-axis representing hours ranges from negative 1 to 10 in unit increments. The y-axis representing height in inches ranges from negative 1 to 10 in unit increments.

Question

The graph represents the amount of rainfall, shown by a rain measuring device, over time as a storm is subsiding. What is the rate that the rain is falling?

Answer 1

The rate that the rain is falling can be determined by calculating the slope of the line.

To find the slope of the line, we need to find the change in y (height) divided by the change in x (hours).

Let's say that the starting point of the line is at (-1, -1) and the ending point is at (10, 6). The change in y is 6 - (-1) = 7 and the change in x is 10 - (-1) = 11.

So the slope of the line, which represents the rate that the rain is falling, is 7/11.