Which statement explains the relationship of sides BA and B'A' after rectangle BADC has been rotated 90° counterclockwise about the origin?
https://hernando.flvs.net/webdav/assessment_images/educator_geometry_v19/04_02_g10_flvs.png

Side B'A' has a slope of 1 and is parallel to side BA.
Side B'A' has a slope of −1 and is parallel to side BA.
Side B'A' has a slope of 1 and is perpendicular to side BA.
Side B'A' has a slope of −1 and is perpendicular to side BA.

Question

Which statement explains the relationship of sides BA and B'A' after rectangle BADC has been rotated 90° counterclockwise about the origin?
https://hernando.flvs.net/webdav/assessment_images/educator_geometry_v19/04_02_g10_flvs.png
 
Side B'A' has a slope of 1 and is parallel to side BA.
 Side B'A' has a slope of −1 and is parallel to side BA.
 Side B'A' has a slope of 1 and is perpendicular to side BA.
 Side B'A' has a slope of −1 and is perpendicular to side BA.

lemon1boy1 · Answer

The picture is the link

rocfp · Answer

Im sorry the link does not  work.

lemon1boy1 · Answer

attachment

rocfp · Answer

Here is an example, trying plugging in your answer, and see what you will get. Im not quite sure  though.

rocfp · Answer

This was the answer to the example

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1 attachment

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