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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.
CAHSEE Math 4.4 Algebra I 201 Views
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Description:
Algebra I Drill 4, Problem 4. Which of the following could be an equation for line l ?
Transcript
- 00:03
SHMOOP… there it is…
- 00:05
The graph of the line y equals 1/12x minus 12 is parallel to line I.
- 00:11
Which one of the following could be an equation for line I?
- 00:15
And here are the potential answers…
- 00:22
So… what is this question asking?
Full Transcript
- 00:24
Do we really know the innards of y equals mx plus b?
- 00:27
Well this equation is already written in y equals mx plus b form and we know that parallel
- 00:32
lines all have the same slope.
- 00:34
The slope in this case is circled here – it’s one twelfth.
- 00:38
So we just have to look for a line that has 1/12th in the “m” area…
- 00:43
Well… B would get us there, but it’s written as NEGATIVE
- 00:46
so our response to that option is… negative as well.
- 00:49
The answer is D.
- 00:50
As in, “Dinner.”
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