1. Find Slope and Rate of Change
Notes 2.2
Find Slope and Rate of Change

2. Slope (m)
Slope is always referred to as the letter m.

3. Rules to Follow:
If the slope has a 0 in the numerator, the slope is called zero slope.
If the slope has a 0 in the denominator, the slope is called undefined.

4. Find the slope given the two points.

5. Find the slope given the two points.

6. Examples:

7. Examples:

8. Examples:

9. Examples:

10. Types of Slope
Positive Slope
Negative Slope

11. Types of Slope
0 Slope
Undefined Slope

12. Parallel Lines The slope of parallel lines is equal. Example: m = 3

13. Perpendicular Lines
The slope of perpendicular lines is the negative reciprocal.
m = 2
m = -4

14. Tell whether the lines are parallel, perpendicular, or neither.
Line 1: through (-2, 2) and (0, -1)
Line 2: through (-4, -1) and (2, 3)

15. Tell whether the lines are parallel, perpendicular, or neither.
Line 1: through (1, 2) and (4, -3)
Line 2: through (-4, 3) and (-1, -2)

16. Tell whether the lines are parallel, perpendicular, or neither.
Line 1: through (-2, 8) and (2, -4)
Line 2: through (-5, 1) and (-2, 2)

17. Tell whether the lines are parallel, perpendicular, or neither.
Line 1: through (-4, -2) and (1, 7)
Line 2: through (-1, -4) and (3, 5)

18. Homework:
P , 18-23, 29-34