Answer:
The slope of (6, 5) and (3, 7.5) is 5/-6.
As a decimal: (-0.83333333333...)
Explanation:
Formula for slope:
('m' means slope.)
coordinates of the first coordinate point
coordinates of the second coordinate point.
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Coordinates:

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Now, I will simply plug the numbers into the formula.

As a decimal: (-0.83333333333...)