User:TeacherDave1

Rate of Change which allows us to see the relationship that is between two quantities that are changing: (Change in the dependent variable)/(change in independent variable). This is also know as vertical change / horizontal change. In general terms Rise / run. This is found by using the following formula to find slope (y2-y1)/(x2-x1) using the @ least two order pairs (1,  2),                   (3,   4)    ( x1, y1),                  (x2, y2) (1st order pair)     (2nd order pair) TeacherDave1 (talk) 19:46, 12 September 2010 (UTC)TeacherDave1