Question

Which of the following would be a rule for rotating 90 degrees clockwise

A. (x,y)--> (-x,y)
B. (x.y)--> (-y.x)
C. (x,y)--> (-x,-y)
D. (x,y)--> (-y)-x)

Answer 1

The correct rule for rotating 90 degrees clockwise is option B. (x.y)--> (-y.x). To rotate a point 90 degrees clockwise, we switch the x and y coordinates and negate the new x coordinate.

Step-by-step explanation:

The correct rule for rotating 90 degrees clockwise is option B. (x.y)--> (-y.x).

To rotate a point 90 degrees clockwise, we switch the x and y coordinates and negate the new x coordinate. So, if the original point is (x, y), the new point after rotating 90 degrees clockwise will be (-y, x).

For example, let's say we have a point (3, 4). After rotating it 90 degrees clockwise, the new point will be (-4, 3).