1. Rate of Change and Slope
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Given a graph, can you think of two different ways to find the slope?
-1/5
We are given a graph and we want to find the slope of the line. To do it, let's first recall the Slope Formula.
The Slope Formula |
The slope of a line that passes through the points (x_1,y_1) and (x_2,y_2) is given by the following formula. slope = rise/run = y_2 - y_1/x_2-x_1, where x_2-x_1 ≠0 The x -coordinate we use first in the denominator must belong to the same ordered pair as the y -coordinate we use first in the numerator. |
Substitute ( -2,2) & ( 3,1)
a-(- b)=a+b
Add and subtract terms
Put minus sign in front of fraction