How to rotate a point counter clockwise 90 degrees

The video tutorial explains how to rotate a point on a coordinate grid by 90 degrees counterclockwise. It introduces the concept of using a fixed point at the origin and demonstrates the process of swapping coordinates and making the Y coordinate negative. The tutorial provides a visual example to help understand the new position of the rotated point.

What is the initial setup for rotating a point on a coordinate grid?

• Using a fixed point at (0,1)

• Using a fixed point at (1,1)

• Using a fixed point at the origin

• Using a fixed point at (1,0)

What is the first step in rotating a point 90 degrees counterclockwise?

• Make the Z coordinate negative

• Make the X coordinate negative

• Swap the X and Y coordinates

• Swap the X and Z coordinates

After swapping the coordinates for a 90-degree counterclockwise rotation, what should be done next?

• Make the Y coordinate negative

• Make the X coordinate positive

• Make the X coordinate negative

• Make the Y coordinate positive

What is the new position of point Q after applying the 90-degree counterclockwise rotation?

• (-1, -4)

• (-4, 1)

• (1, 4)

• (4, -1)

How can you verify the new position of a point after a 90-degree rotation?

• By checking if the point lands in the expected quadrant

• By checking if the point is at the origin

• By checking if the point is on the X-axis

• By checking if the point is on the Y-axis