Question 217928
slope  =m = (y2-y2)/(x2-x1)
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for (4,5)  and  (8,-3)
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m= (5-(-3))/(4-8) = 8/-4= -2,,,,,answer
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if  we  reversed  the  coordinates,  the  answer remains  the  same,,,
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m=(-3-5)/(8-4) = -8/4 = -2
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Note,  it  is  very  easy to  make  a  rough  sketch, showing  the  points, and  the rt  triangle  showing ,,,,delta x,  and  delta y.
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Just  remember,,slope  is  rise/run,,,or  delta y/ delta x
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positive  slope  rises  to  rt,,negative  drops  to  right,,,
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