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Can someone please help me ​

Can someone please help me ​-example-1

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Answer:

  • Q'(-5, 4)
  • rotated wrong direction
  • Samir's point is 4th-quadrant; it should be 2nd quadrant as is the above

Explanation:

A 90° CCW rotation can be accomplished by the transformation ...

(x, y) ⇒ (-y, x)

So, for Q = (4, 5), the rotated point will be ...

Q' = (-5, 4)

__

Samir may have gotten his answer by using the transformation for a rotation clockwise of 90°. Or, he may have mixed up the x- and y-coordinates.

__

A check of Samir's answer can be made by plotting the point he described. It will be in the 4th quadrant, which is located 90° CW from the original 1st-quadrant point.

Similarly, the above answer can be checked by plotting it. The point is in the 2nd quadrant, which is 90° CCW from the original 1st-quadrant point.

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