1. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph

2. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
1. Slope ( m ) equation given two points.
- remember, slope ( m ) is a

3. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
1. Slope ( m ) equation given two points.
- remember, slope ( m ) is a
EXAMPLE : Calculate the slope of the line through ( 2 , 5 ) and ( 5 , 7 ).

4. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
1. Slope ( m ) equation given two points.
- remember, slope ( m ) is a x1 y1 x2 y2
EXAMPLE : Calculate the slope of the line through ( 2 , 5 ) and ( 5 , 7 ).

5. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
1. Slope ( m ) equation given two points.
- remember, slope ( m ) is a x1 y1 x2 y2
EXAMPLE : Calculate the slope of the line through ( 2 , 5 ) and ( 5 , 7 ).

6. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
1. Slope ( m ) equation given two points.
- remember, slope ( m ) is a x1 y1 x2 y2
EXAMPLE : Calculate the slope of the line through ( - 1 , 8 ) and ( 2 , - 3 ).

7. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
Positive slope – uphill left to right
Negative slope – downhill left to right

8. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
Positive slope – uphill left to right
Negative slope – downhill left to right
Zero Slope - horizontal line
No Slope – vertical line

9. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
When counting slope on a graph :
Positive slope – uphill left to right
- up and to the right OR
- down and to the left
Negative slope – downhill left to right
- up and to the left

10. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
EXAMPLE : What is the slope of the given line on the graph.

11. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
EXAMPLE : What is the slope of the given line on the graph.
Pick a starting point….

12. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
EXAMPLE : What is the slope of the given line on the graph.
Begin by counting up in the y
direction…( 5 ) 5

13. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
EXAMPLE : What is the slope of the given line on the graph.
Begin by counting up in the y direction…( 5 )
Then we will count right in the x direction… ( 2 ) 2 5

14. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
EXAMPLE : What is the slope of the given line on the graph.
Begin by counting up in the y direction…( 5 )
Then we will count right in the x direction… ( 2 )
This line goes up hill L – R so the slope is : 2 5

15. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
EXAMPLE : What is the slope of the given line on the graph.
Begin by getting a starting point…

16. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
EXAMPLE : What is the slope of the given line on the graph.
Begin by counting down in the y direction…( - 3 )
Then we will count right in the x direction… ( 4 )
This line goes down hill L – R so the slope is :
- 3 4

17. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
3. Counting slope from a given point to get a new point
EXAMPLE : Plot another point starting at
the given point and using

18. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
3. Counting slope from a given point to get a new point
EXAMPLE : Plot another point starting at
the given point and using
- 2
Starting at the given point…
- count down two ( -2 )

19. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
3. Counting slope from a given point to get a new point
EXAMPLE : Plot another point starting at
the given point and using
- 2
Starting at the given point…
- count down two ( -2 )
- then right three ( 3 ) 3

20. Calculating Slope of a Line :
2 Methods 1. Slope ( m ) equation given 2 points
2. Counting the slope from a given graph
3. Counting slope from a given point to get a new point
EXAMPLE : Plot another point starting at
the given point and using
- 2
Starting at the given point…
- count down two ( -2 )
- then right three ( 3 )
- plot your new point 3