Math Problem Statement

The point (-2, -3) is rotated 90° clockwise using center (-3, -3). Enter the coordinate of the image as (x, y).

Solution

The problem in the image asks for the coordinates of the point (2,3)(-2, -3) after a 90° clockwise rotation about the center point (3,3)(3, -3).

Steps to solve:

  1. Translation to the origin: First, subtract the center coordinates from the point to translate the point to a coordinate system centered at (3,3)(3, -3). This will give us the relative coordinates of the point: (2,3)(3,3)=(23,3(3))=(5,0)(-2, -3) - (3, -3) = (-2 - 3, -3 - (-3)) = (-5, 0) So, the translated point is (5,0)(-5, 0).

  2. Rotation by 90° clockwise: The formula for a 90° clockwise rotation of a point (x,y)(x, y) around the origin is: (x,y)=(y,x)(x', y') = (y, -x) Applying this to the translated point (5,0)(-5, 0): (0,(5))=(0,5)(0, -(-5)) = (0, 5) So after rotation, the point is (0,5)(0, 5) in the translated system.

  3. Translation back to the original coordinates: Now, we translate the point back to the original coordinate system by adding the center point (3,3)(3, -3): (0,5)+(3,3)=(0+3,5+(3))=(3,2)(0, 5) + (3, -3) = (0 + 3, 5 + (-3)) = (3, 2)

Thus, after rotating the point (2,3)(-2, -3) 90° clockwise around (3,3)(3, -3), the new coordinates are (3,2)(3, 2).

Let me know if you would like further explanation on any step!

Related Questions:

  1. What is the formula for a 180° rotation around a point?
  2. How do you rotate a point 90° counterclockwise around the origin?
  3. What changes in the formula for rotating around a different center, like (2,1)(2,1)?
  4. How do you reflect a point over a given line, like y=xy = x?
  5. How do you translate a point by a vector in a 2D plane?

Tip:

When rotating points around a center other than the origin, always remember to translate the center to the origin first, then perform the rotation, and finally translate back.

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Math Problem Analysis

Mathematical Concepts

Coordinate Geometry
Rotation

Formulas

Rotation transformation (x', y') = (y, -x)

Theorems

Rotation about an arbitrary point

Suitable Grade Level

Grades 9-12