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Parallel and Perpendicular Lines Videos 23 videos
This video explores parallel lines and transversals: how to identify them both on a math test and in real life urban planning. What do the consecut...
To prove lines are parallel, you need a third line. We at Shmoop (and the rest of the world) call it a transversal.
GED Math 2.2 Graphs and Functions 1087 Views
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Description:
GED Math: Graphs and Functions Drill 2, Problem 2. Lines A and B are...what?
Transcript
- 00:00
Thank you We sneak in and here's your smug too
- 00:05
Sure brought to you by parallel lines It was supposed
- 00:08
to be brought to you by perpendicular lines but they're
- 00:11
a little cross with each other right now are the
- 00:14
equation of line is three Expense y equals five And
Full Transcript
- 00:17
the equation of line b is x plus three Why
- 00:20
equal six lines a and b are what Well the
- 00:26
dropdown thing here and gives us three options wants a
- 00:29
beer parallel perpendicular or the same Well we suppose they
- 00:33
could be the same line Although if that's true line
- 00:36
b has definitely had some work done Okay down to
- 00:40
business Figuring out one lines relation to another is all
- 00:43
about determining the slope And so we need to get
- 00:47
the slopes out of both lines and see how they
- 00:50
all shake out Both lines are written in the form
- 00:52
of a x plus B why equal c So we
- 00:55
can use the slope formula Slope equals negative A over
- 01:00
b to find what we need Well for line eh
- 01:03
We plug in three for a and negative one for
- 01:06
be Could get a slope of three Yeah because those
- 01:10
negative signs cancel out so that look the line be
- 01:14
We plug in one for a and three for b
- 01:18
to get a slope of negative one third like when
- 01:20
it's negative It slopes that way with positive it's like
- 01:23
that got it And because these two numbers are negative
- 01:27
reciprocal sze Well we can be sure we're looking at
- 01:30
a couple of perpendicular lines here We certainly hope those
- 01:33
two things work out and be ashamed They both reached 00:01:36.328 --> [endTime] their boiling point
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This video explores parallel lines and transversals: how to identify them both on a math test and in real life urban planning. What do the consecut...