Sorry-I didn't know what category this would fall in. How do you find the rate of change in an equation? If you have a chart...
Example:
x y
1 3
3 5
4 6
"Rate of change" means "slope", and
(1,3), (3,5), and (4,6) are points
We must use the slope formula with all
pairs of the three points to make sure
the rate of change is the same:
The slope formula is
Using the pair of points (1,3), and (3,5):
Using the pair of points (1,3), and (4,6):
Using the pair of points (3,5), and (4,6):
They are all the same, so the "slope" and
therefore the "rate of change" is 1.
Edwin
