4.05 NOTES - Slope by Formula Review: Find the slope of each line: What if no graph is given? What if you only know two points that the line goes through or you have just a table of values? Find the slope of a line through the following points (5 , 2) and (8 , 7)

Find the slope of the line through the points: 1. (-2 , 3) and (4 , 8) 2. (7 , -6) and (-5 , 2) 3. (1 , 2) and (5 , 2) 4. (2 , 1) and (2 , 5)

SLOPE FORMULA Given two points (x1 , y1) and (x2 , y2)

12

12

xxyym

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c

b

a

d

a. ____

b. ____

c. ____

d. ____

Determine the value of r so that the line through the given points has the indicated slope.

5. (-2 , 4), (r , 5), m = 51 6. (3 , 4), (-1 , r), m =

43�

Find slope from a table: 7.

Find the Slope of each line and then describe what it represents. 8. 9.