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Okay sy mash members Still more of these triangle thing

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is alright Well abc has points ah away in the

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nick of three seven one Negative too Where are these

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points after we reflect the trang gle across the y

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axis All right looking good now a track down the

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reflection when the points reflected over the y axis you

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know the tall one there it goes from one side

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of the access to a point on the other side

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just is far away If the points at x equals

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negative three Well count over to the y axis One

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two three then continue going And other three points one

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two three toe add a point two x equals three

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they're both three units away from the y axis but

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on opposite sides Thank ya know reeves the matrix in

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short when appointed reflected across the y axis the sign

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of all the x values changes the y values on

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the other hand don't change at all The image isn't

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moving up and down in any way just side to

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side so it's come back to point a in a

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minute and i'll start with b and c Well we

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already talked about point being negative three seven of it

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since exits negative three moves to x equals three and

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the y value doesn't change it all That brings us

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to be prime there which is three seven right They're

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using the same method on seve got one negative to

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swap The sign of x x equals one Their tow

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x equals negative one And don't touch the y value

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at all not even with a ten foot wall So

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now we get c prime is negative one negative too

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and now look att a You have zero eight leave

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Why alone because again there's no up or down movement

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there and the sign of the x value hadn't changed

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though either because well don't have a sign it Zero

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there A prime is actually the same as a so

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we have zero comma eight putting it all together The

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answer is zero eight and then three seven and then

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negative one Negative too so well that's it The the 00:01:48.046 --> [endTime] answer is b We're swamped and reflected

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