math
posted by HELP exam review ! .
my teacher gave me exam review booklets and there is something i don't understand.. the question is : Find the slope of a line that passes through the points (9,3) and (7,1).
if someone can please explain to me how to solve this it would help majorly ! :)

If P1(x1,y1) and P2 (x2,y2) are two points on a line, the number m defined by the equation
Slope m = (y2  y1)/(x2  x1)
is called the slope of the line.
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