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Mathematics 9 Online
Gucchi:

geometry help!

Gucchi:

1 attachment
Gucchi:

@vocaloid

Gucchi:

I dont think it is A or C. It is between b and D

Vocaloid:

Point S is currently at (-7,6) Applying the transformation (x-2, y -4) to S gives us (-9, 2). Can you try rotating it 90 degrees ***counter***clockwise now? It should end up in quadrant III.

Vocaloid:

Try drawing it. You could also try calculating it manually via the transformation formula (x,y) —> (-y,x)

Gucchi:

Okay, so its B.?

Vocaloid:

How did you get B? After translating it it’s (-9,2), then apply (x,y) —> (-y,x). you switch the coordinates to get (2,-9) and then multiply the first coordinate by -1 to get (-2,-9).

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