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Mathematics
OpenStudy (anonymous):

How are the coordinates of the new point found if it is dilated with a scale factor of 3?

OpenStudy (anonymous):

) Here θ = 270; so, cos(270) = 0 and sin(270) = -1 Thus, (x₁,y₁) = (x*0-y*-1, x*-1+y*0) = (y,-x) [It is equivalent to 90 deg rotation in clockwise]

OpenStudy (anonymous):

thanks heres a few more im just so bad at math How are the coordinates of the new point found if it is rotated 90° counterclockwise? How many degrees is that equivalent to if the rotation is clockwise?

OpenStudy (anonymous):

I don't quite understand @seashell 's reasoning. What I believe one should do is find the angle of the point to the \(x\)-axis, and then find the point that is three times the distance away form the origin as the original point.

OpenStudy (anonymous):

:p well then ;)

OpenStudy (anonymous):

Dilation means to stretch outward...it's not a rotation.

OpenStudy (anonymous):

:p i gave you a medal ALRIGHT!;)

OpenStudy (anonymous):

Haha I know. ;-) Just clarifying.

OpenStudy (anonymous):

:D

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