Time(h) Rainfall (in.)

3 2
6 4
9 6
12 8
Graph the data in the table on the coordinate plan grid. Draw the line.

Find slope
Identify the unit rate.

1 answer

To find the slope of the line, we can use the formula:

Slope = (change in y)/(change in x)

We have two points (3,2) and (12,8). Let's calculate the change in x and change in y:

Change in x = 12 - 3 = 9
Change in y = 8 - 2 = 6

Now, we can find the slope:

Slope = 6/9 = 2/3

The unit rate of the slope is 2/3, which means for every 3 hours, there is an increase of 2 inches in rainfall.