Hi there!
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I believe your answer is:
The slope of two points (9,5) and (1,10) is [tex]\boxed{-\frac{5}{8}}[/tex].
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Here’s why:
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[tex]\boxed{\text{The Slope Formula:}}\\\\\frac{(y_2-y_1)}{(x_2-x_1)}\\\\\boxed{\text{Key:}}\\\\(x_1,y_1)-\text{First Point}\\\\(x_2,y_2)-\text{Second Point}\\\\[/tex]
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We are given the points (9,5) and (1,10).
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[tex]\boxed{\text{Finding the Slope:}}\\\\\rightarrow m=\frac{10-5}{1-9}\\\\\rightarrow m=\frac{5}{-8}\\\\ \boxed{m=-\frac{5}{8}}[/tex]
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Hope this helps you. I apologize if it’s incorrect.