Posted by HELP exam review ! on Thursday, January 27, 2011 at 9:43pm.
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 ! :)

math  helper, Thursday, January 27, 2011 at 10:37pm
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.