Question 49113
You can use the slope formula:
{{{m = (y2-y1)/(x2-x1)}}}

Where: (8, 7) = (x1, y1) and (5, 10) = (x2, y2) Make the appropriate substitutions into the slope formula:

{{{m = (10-7)/(5-8)}}} Simplify.
{{{m = 3/-3}}}
{{{m = -1}}}