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Mathematics 15 Online
OpenStudy (anonymous):

question is in comment! PLEASE HELP...

OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

what is the distance from R to U

OpenStudy (anonymous):

2units

jimthompson5910 (jim_thompson5910):

So the distance from B to C must also be 2 units point C is 2 units below point B, so point C is at _____

jimthompson5910 (jim_thompson5910):

you can see this is if you slide rectangle RSTU over to where A and B are

OpenStudy (anonymous):

c is 1,1

jimthompson5910 (jim_thompson5910):

correct

jimthompson5910 (jim_thompson5910):

D is found in much the same way

OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

pick two points, say A and A' and try to figure out how to translate A to A'

OpenStudy (anonymous):

so is the first choice correct then?

jimthompson5910 (jim_thompson5910):

you got it, hopefully you see why it's A?

OpenStudy (anonymous):

yeah i just did what you said, can you help with one more?

jimthompson5910 (jim_thompson5910):

alright great, sure I can do one more

OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

what did you get

OpenStudy (anonymous):

i dont really get this one

jimthompson5910 (jim_thompson5910):

if you reflected the point T over some line to get T' what line would have to reflect T over?

OpenStudy (anonymous):

y?

jimthompson5910 (jim_thompson5910):

is the line of reflection horizontal, vertical, or diagonal

OpenStudy (anonymous):

y=x?

jimthompson5910 (jim_thompson5910):

where is the mirror line? is this line horizontal or vertical?

OpenStudy (anonymous):

vertical

jimthompson5910 (jim_thompson5910):

so it's going to look like this form x = h where h is any number

jimthompson5910 (jim_thompson5910):

if h = 1, then x = 1 is a vertical line that cuts through 1 on the x axis if h = 0, then x = 0 is a vertical line that cuts through 0 on the x axis ... and this line overlaps the y axis perfectly etc etc

jimthompson5910 (jim_thompson5910):

so this is why the answer is x = 0 if you reflect T over the vertical line x = 0, then you will get T'

OpenStudy (anonymous):

thank you!

jimthompson5910 (jim_thompson5910):

you're welcome

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