Please help,

Locate one other point on the trend line. Then find the slope of the trend line.
...How do I do that?

Divide the change in y (the vertical axis value) by the change in the x-axis value (which may represent time).

3b. Pick any two points on the line and find the slope of the line.

The slope is a numerical value that describes just how slanted a given line is.

Here is is an example of finding the slope of a line.

SAMPLE:

Given the points (3, 4) and (8, 9), find the slope.

The symbol for slope is the letter m.

Let m = slope.

We now subtract b from d and a from c.

(a,b) = (3,4)

(c,d) = (8,9)

m = (9 - 4)/(8 - 3)

m = 5/5

m = 1

The slope is 1.

Did you follow?

To locate another point on the trend line, you need to have at least two coordinates already plotted on the line. If you only have one point, you can't determine the trend line.

If you have multiple data points, you can use them to draw a trend line that best fits the data. You can use a graphing calculator or software like Microsoft Excel to plot the points and create a trend line. Once you have the trend line, you can find another point on it by selecting any x-value and reading the corresponding y-value from the trend line.

To find the slope of the trend line, you can use the formula for slope, which is ∆y/∆x (change in y divided by change in x). Choose any two points on the trend line, and calculate the difference in their y-coordinates (∆y) and the difference in their x-coordinates (∆x). Then divide ∆y by ∆x to find the slope.

Keep in mind that finding another point and calculating the slope of the trend line can be done either manually or using graphing software, depending on the available resources and context.