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Introduction To Slope
Slope is a  measure of steepness.
Types of Slope Positive Negative Zero Undefined or  No Slope
Slope is sometimes referred to as the “ rate of change” between 2 points.
The letter “m” is used to represent slope.
When given two points  (x 1 ,y 1 ) and (x 2 ,y 2 ),  use the formula:
Find the slope of the  line through the points (3,7) and (5, 19). x 1 y 1 x 2 y 2 Example #1:
Find the slope of the  line through the points (3,7) and (5, 19). m = 19 – 7 5 – 3   m = 12 2 m = 6 Example #1 (continued):
(3, 4) and (-6, -2) m =  -2 – 4  -6 – 3  m =  -6  -9  m =  ⅔ Example #2:
What if the numerator is 0? Then the line has a slope of zero.
What if the denominator is 0? Then the line has no slope,  because division by zero is undefined.
Tonight’s Homework pg. 321 #1-27 (odd)
The End

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