Figure ABCD is a parallelogram with point C (−4, 1). What rule would rotate the figure 90 degrees counterclockwise, and what coordinate would be the output for point C'?

(x, y) → (y, −x); C' (1, 4)

(x, y) → (y, x); C' (1, −4)

(x, y) → ( −y, x); C' (−1, −4)

(x, y) → ( −y, −x); C' (−1,4)

Question

Figure ABCD is a parallelogram with point C (−4, 1). What rule would rotate the figure 90 degrees counterclockwise, and what coordinate would be the output for point C'? 

 (x, y) → (y, −x); C' (1, 4) 

 (x, y) → (y, x); C' (1, −4) 

 (x, y) → ( −y, x); C' (−1, −4) 

 (x, y) → ( −y, −x); C' (−1,4)

anonymous · Answer

@myininaya @mathstudent55 @jdoe0001 @whpalmer4

anonymous · Answer

@Luigi0210 @Compassionate @Destinymasha @hoblos Help please?

anonymous · Answer

@eliassaab @ranga @dan815 @timo86m  help please?

anonymous · Answer

Okay, let me draw it.

anonymous · Answer

|dw:1395270129593:dw|

anonymous · Answer

A 90 degrees counterclockwise rotation would map it to:
|dw:1395270261274:dw|

anonymous · Answer

Which means the answer is the third one.

anonymous · Answer

(x, y) → ( −y, x); C' (−1, −4)  is NOT correct, to rule one out for you.