Question

A triangle is rotated 90° about the origin. Which rule describes the transformation?
O(,y) - (x, y)
(x,y) - (y,x)
(x,y) - (y; -)
O(x, y) - (y;-)

Answer 1

Answer:

(x, y) - (y, -x)

Step-by-step explanation:

Rotation is a process in which the orientation of a given figure is changed by turning it about a point called origin.  The rotation can be done either clock-wisely or counterclockwise about the origin.

If the given triangle is rotated $90^{0}$ clockwise, the rule that describe the transformation is; (x, y) - (y, -x)

If the given triangle is rotated $90^{0}$ counterclockwise, the rule that describe the transformation is; (x, y) - (-y, x)

In the given question, the required rule is; (x, y) - (y, -x). This shows a clockwise rotation of  $90^{0}$ about the origin.