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Mathematics 15 Online
OpenStudy (anonymous):

Help Please :/ !!! Triangle STU is located at S (2, 1), T (2, 3), and U (0, -1). The triangle is then transformed using the rule (x-4, y+3) to form the image S'T'U'. What are the new coordinates of S', T,' and U'? Describe what characteristics you would find if the corresponding vertices were connected with line segments.

OpenStudy (secret-ninja):

First, you need to begin by plotting down the triangle. Have you done that already?

OpenStudy (anonymous):

no let me do that now

OpenStudy (anonymous):

okay i have it plotted

OpenStudy (secret-ninja):

Okay, the (x-4) means that you move the triangle to the left (because its a negative sign) by four spaces (because it is a 4).

OpenStudy (secret-ninja):

Now you have (y+3) so you move it up (because it is positive) by 3 spaces (because it is 3)

OpenStudy (secret-ninja):

Do that, and let me know when you have it done.

OpenStudy (anonymous):

ok one sec

OpenStudy (secret-ninja):

The one below is the first triangle, and the one above it and to its left is the new one, with the new coordinates. Did you get the same?

OpenStudy (anonymous):

see this is why i was having trouble, lol it is an oddly shaped triangle. but let me try it an see

OpenStudy (secret-ninja):

Yes, its a bit thin, bit its got the 3 vertices so its a triangle lol

OpenStudy (anonymous):

ok i've gotten -2,1 for s -2,3 for t and -4,-1 for u. what did I do wrong?

OpenStudy (secret-ninja):

You got the x's correct, but the y's are not right... Make sure to go up 3 spaces, maybe you miscounted.

OpenStudy (anonymous):

okay I see what I did wrong. I only counted to the left 4 spaces, and i didn't count up

OpenStudy (secret-ninja):

Just make sure to not count the space you are already on, you start on the on right after it.

OpenStudy (secret-ninja):

Ah, there you are. Good job! :D

OpenStudy (anonymous):

Thanks So Much !

OpenStudy (secret-ninja):

No problem! :]

OpenStudy (anonymous):

could you help me understand the second part of the problem? where it says " Describe what characteristics you would find if the corresponding vertices were connected with line segments."

OpenStudy (anonymous):

@Secret-Ninja

OpenStudy (secret-ninja):

Hmm.... I think it means when you connect the old and new points. Maybe you should draw a line connecting S with S' and T with T' and U with U'.

OpenStudy (secret-ninja):

Then you describe what you see.

OpenStudy (secret-ninja):

Its just a guess, I may be wrong. :p

OpenStudy (anonymous):

okay thanks

OpenStudy (secret-ninja):

No problem. :)

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