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mars1129 [50]
3 years ago
14

What are the coordinates of the image of point (−1, 5) after a counterclockwise rotation of 90º about the origin?

Mathematics
2 answers:
Andreas93 [3]3 years ago
8 0
-5,0 would be the correct answer
gladu [14]3 years ago
7 0

Answer:

(-5,-1)

Step-by-step explanation:

We have been given the coordinates of a point and we are asked to find the coordinates of he point after a counterclockwise rotation of 90º about the origin.  

We know that after rotating a point 90 degree counter-clockwise about the origin, the x and y-coordinates changes places with each other and x-coordinate of new point becomes the negative of y-coordinate.

(x,y)\rightarrow (-y,x)

Applying the rotation rule the coordinates of new point would be:

(-1,5)\rightarrow (-5,-1)

Therefore, the required coordinates of the given point after a counterclockwise rotation of 90º about the origin would be (-5,-1).

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