Slope is the change in Y over the change in X. Written out, the formula looks is as follows:
It's a simple formula that just requires you to input your coordinates to calculate the value of the slope. Values are generally notated as such:
For this example, we'll use the following coordinates:
This means that the following is true:
x1 = -7
x2 = -4
y1 = 5
y2 = 7
Knowing this, we simply have to plug in the numbers to the slope formula:
(7) - (5)
(-4) - (-7)
This of course equates to the following:
So, for the coordinates (-7,5) and (-4,7), the slope is 2/3.
For a video guide, check out the tutorial below from Davitily.
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