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Geometry and Measurement Videos 36 videos

TSI Math: Calculating Segment Length with the Distance Formula
6 Views

How long is the line segment connecting the points (-6, 7) and (5, -4)?

TSI Math: Identifying a Line's Bisector on a Graph
1 Views

Any line that bisects the segment shown above must pass through which point?

TSI Math: Working Backwards from the Midpoint Formula to Find an Endpoint
13 Views

Point B is the midpoint of segment AC. The coordinates of A are (-9, 3) and the coordinates of B are (2, -3). What are the coordinates of C?

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TSI Math: Calculating Segment Length with the Distance Formula 6 Views


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Description:

How long is the line segment connecting the points (-6, 7) and (5, -4)?


Transcript

00:02

Okay sy Match members were focusing on plane geometry now

00:06

which we hope is a lot more interesting than fancy

00:09

geometry Okay how long is the line segment connecting the

00:12

points Negative six seven and five Negative for hold on

00:20

while we take out our trusty mathematical tool box full

00:22

of formulas and serums the right tool for this job

00:25

you have the distance formula so distance equals all this

00:28

We just need to plug in the given x and

00:30

y coordinates that we're done so we just plug him

00:33

in Well x two let's call that the this five

00:35

right here and that's going to subtract the x one

00:39

there knows you're tracking negative sense positive and then we're

00:42

going to square it We've gotta do that what's in

00:44

the princess first it'll be eleven eleven squared and we're

00:47

going to add that See this negative for minus seven

00:51

tickets us Yeah hold negative eleven inside squared So it's

00:55

square root of eleven squared plus eleven squared and that's

00:59

what is that Two times eleven squared and well let's

01:02

see since the two squared terms are the same you

01:04

don't even need to do any squaring beyond this Instead

01:07

just use the properties of square roots and we get

01:09

d equals square root of two times eleven square there

01:12

orjust back out the eleven and eleven times square root

01:14

of to that's the distance on dh we're done We're 00:01:17.989 --> [endTime] smoked That's it

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