If P(-2, 1) is rotated 90°, its image is (2, -1) (1, -2) (-1, -2)

Question

asked Jul 13, 2017 120k views

2 Answers

Gerco Dries · Answer 1 · 2017-07-18T23:46:14+0000

Answer:

The correct option is 3.

Explanation:

If a point rotated 90° counterclockwise about the origin, then

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

It is given that P(-2, 1) is rotated 90°, it means point rotated 90° counterclockwise about the origin. So, thje image of the point P is

$P(-2,1)\rightarrow P'(-(1),(-2))$

$P(-2,1)\rightarrow P'(-1,-2)$

The coordinates of image of point P are(-1,-2).

Therefore the correct option is 3.