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anonymous
 4 years ago
When point E (9, 3) is rotated 180� about the origin, its coordinate becomes (3, 9).
True
False
anonymous
 4 years ago
When point E (9, 3) is rotated 180� about the origin, its coordinate becomes (3, 9). True False

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0how do you know its 9 3?

mathmate
 4 years ago
Best ResponseYou've already chosen the best response.4If you substitute the rotation matrix for 180 degrees, you'd get the rule T180(x,y)=(x,y), so the rotated point should be (9,3)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0^know that, or you become a lazy slob like me who imagined it on the coordinate plane instead of remembering the rule. (Facepalm)

mathmate
 4 years ago
Best ResponseYou've already chosen the best response.4You have a point. But to help someone, we need something concrete to work on.

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.0I see nothing wrong with imagining it on a coordinate plane. The rule makes more since that way.
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