15 parallel and perpendicular.notebook

1

October 23, 2016

Dec 7­3:53 PM

Parallel & Perpendicular LinesAgenda

Reminders

Essential Question

Warm-UpNotes

HW #1-5

HW 1.9 Due MondayQuiz 10/25

How do I identify two parallel or two

perpendicular lines? As measured by getting 80% on your homework correct.

Wednesday Warm-Up

Graph y=2, y=-2, and x=3. Compare and contrast what do the lines have in common and don't have in common.

Oct 21­9:57 AM

15 parallel and perpendicular.notebook

2

October 23, 2016

Oct 21­9:57 AM

Dec 7­3:53 PM

Fold your foldable in half so it looks like this:

Parallel & Perpendicular LinesEssential Question

How do I identify two parallel or two perpendicular lines? As measured by getting 80% on your homework correct.

15 parallel and perpendicular.notebook

3

October 23, 2016

Dec 7­3:53 PM

If two lines have the SAME SLOPE, then they 

are parallel.

If two lines have the FLIPPIN' OPPOSITE SLOPES, then they are 

perpendicular.

1.Write an equation for a line that is parallel to the line 2x + 3y = 6 and passes through the point (0, 4).

2. Write an equation for a line that passes through the point (­1,6) and is parallel to the line y = 4. 

3. Write an equation for a line that is perpendicular to the line y = 4x + 8 that passes through the point (2,­1)

4. Write an equation for a line that passes through the point (­1,6) and is perpendicular to the line y = 4. 

Parallel & Perpendicular LinesEssential Question

How do I identify two parallel or two perpendicular lines? As measured by getting 80% on your homework correct.

Dec 7­3:53 PM

Parallel & Perpendicular LinesEssential Question

How do I identify two parallel or two perpendicular lines? As measured by getting 80% on your homework correct.

*Turn to the back of the foldable.

15 parallel and perpendicular.notebook

4

October 23, 2016

Dec 7­3:53 PM

General Help: Parallel Lines have the SAME slope.Perpendicular Lines have FLIPPIN' 

OPPOSITE slopes.

1. Find 2 pretty points and count your RISE & RUN. On part C: the point (0,2) is the y­intercept...y=mx+b!2. Put your points in a table! Or use slope formula.

3. Line AD is parallel to Line BC. Check their slopes to prove it!

4. Remember: ignore the first point (it is a typo). Your slope should be ­3/1.C. FLIP the numbers and CHANGE the signs!

5. Remember HOY VUX!What kind of line would be parallel? What type would be perpendicular?

x y­6 ­43 2

y=3

Parallel & Perpendicular Lines