(Transcript of audio with descriptions. Transcript includes narrator headings and description headings of the visual content)
(Speaker)
This problem is similar to part b. Here you're asked to find the slope going from the point 3.5%, 5.5%, to 4.5%, 7.5%.
(Description)
The coordinate plane with Airborne pollutants as a dependent variable and Economic Growth as an independent variable is drawn. The Airborne pollutants are measured from 0 to 7 percent on the y-axis. The Economic Growth is measured from 0 to 10 percent on the x-axis.
(Speaker)
We will start by labeling the first point with an x value of 3.5 and a y value of 5.5.
(Description)
3.5 percent on the horizontal axis and 5.5 percent on the vertical axis are highlighted.
(Speaker)
We will label this point C.
(Description)
A dotted vertical line from 3.5 percent on the x-axis up to 5.5 percent on the y-axis is drawn. Another dotted horizontal line from 5.5 percent on the y-axis to 3.5 percent on the x-axis is drawn. Both lines intersect at the point with coordinates, 3.5 percent and 5.5 percent. This point is labeled as point, C.
(Speaker)
The next step is to find the new point. The problem says that as economic growth increased to 4.5%, airborne pollutants rose to 7.5%. We want to then label the point 4.5 on the x-axis and 7.5 on the y-axis. We will label this point D.
(Description)
4.5 percent on the horizontal axis and 7.5 percent on the vertical axis are highlighted. A dotted vertical line from 4.5 percent on the x-axis up to 7.5 percent on the y-axis is drawn. Another dotted horizontal line from 7.5 percent on the y-axis to 4.5 percent on the x-axis is drawn. Both lines intersect at the point with coordinates, 4.5 percent and 7.5 percent. This point is labeled as point, D.
(Speaker)
Similar to part b, we want to find the slope by taking the change in y divided by the change in x. For this problem, the change in y is 7.5 minus 5.5 or 2. And the change in x is 4.5 minus 3.5 or 1. Taking 2 divided by 1 gives a slope of 2.
(Description)
A line between the points, D, and, C, is drawn. It is labeled as Slope equals the change in Y divided by the change in X equals 7.5 minus 5.5 divided by 4.5 minus 3.5 equals 2 divided by 1 equals 2.