After a rotation of 90 about the origin

answer:

the general rule for rotation of an object 90 degrees is (x, y) > (-y, x). for 180 degrees, the rule is (x, y) > (-x, -y) for 270 degrees, the rule is (x, y) > (y, -x)

rotation of point through 90° about the origin in clockwise direction when point m (h, k) is rotated about the origin o through 90° in clockwise direction. the new position of point m (h, k) will become m’ (k, -h).

1. plot the point m (-2, 3) on the graph paper and rotate it through 90° in clockwise direction, about the origin. find the new position of m.

when the point is rotated through 90° clockwise about the origin, the point m (h, k) takes the image m' (k, -h).therefore, the new position of point m (-2, 3) will become m' (3, 2).

2. find the co-ordinates of the points obtained on rotating the point given below through 90° about the origin in clockwise direction.

solution:

when rotated through 90° about the origin in clockwise direction, the new position of the above points are;

(i) the new position of point p (5, 7) will become p' (7, -5)            

(ii) the new position of point q (-4, -7) will become q' (-7, 4)      

(iii) the new position of point r (-7, 5) will become r' (5, 7)

(iv) the new position of point s (2, -5) will become s' (-5, -2)

step-by-step explanation:

its that easy

hope this !

have a nice day!

i would say c is the best answer, hope it's right!

good luck! =)

cutie~