Question 55022
To find the slope, m, of a line that passes through the two given points, (x1, y1) and (x2, y2), use the formula:
{{{m = (y2-y1)/(x2-x1)}}}
In your problem, the given points are: (x1, y1) is (1, 7) and (x2, y2) is (3, 3).
If you now make the appropriate substitutions into the slope formula you will have found the slope of the line.
{{{m = (3-7)/(3-1)}}} Simplify this to get:
{{{m = (-4)/2}}}
{{{m = -2}}}