Unit-IV; Professional Sales Representative (PSR).pptx
Geom4-6
1. Geom46.notebook November 15, 2011
Please be seated and ready to begin
when the bell rings. Thank you!
Agenda for the day:
1. vocabulary quiz
2. review activity
3. finish 4.6
4. questions on homework
Visual interpretation of slope:
Positive Slope: 6
y
5
4
3
2
1
x
6 5 4 3 2 1 0 1 2 3 4 5 6
1
2
3
4
5
6
1
2. Geom46.notebook November 15, 2011
Visual interpretation of slope:
Negative Slope: 6
y
5
4
3
2
1
x
6 5 4 3 2 1 0 1 2 3 4 5 6
1
2
3
4
5
6
Visual interpretation of slope:
Zero Slope: 6
y
5
4
3
2
1
x
6 5 4 3 2 1 0 1 2 3 4 5 6
1
2
3
4
5
6
2
3. Geom46.notebook November 15, 2011
Visual interpretation of slope:
No Slope: 6
y
5
4
3
2
1
x
6 5 4 3 2 1 0 1 2 3 4 5 6
1
2
3
4
5
6
3
4. Geom46.notebook November 15, 2011
A few theorems about slope:
• If two nonvertical lines are parallel, then their slopes are equal.
• If the slopes of two nonvertical lines are equal, then the lines are
parallel.
• If two lines are perpendicular and neither is vertical, each lines
slope is the opposite reciprocal of the other's.
• If a line's slope is the opposite reciprocal of another line's slope,
the two lines are perpendicular.
homework questions??
4
