Tuesday, September 7, 2010

Slope Formula

Formula of a slope:

The line segment joining the points are (5, - 2) and (-3, 0), Find the slope by using the formula.
Solution:
Step 1: Make the points as,
x1 = 5, y1 = - 2, x2 = -3, and y2 = 0.
Step 2: Formula for slope
m = [(y_(2) - y_(1)) / (x_(2) -x_(1) )]
Step 3: Plug all values in to the formula
m = 0 – (-2) / (-3) – 5
m = - (-2) / -3 – 5
m = 2 / -8
m = - 1 / 4
Thus, the slope m = - 1 / 4.

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