Math Problem Statement

The pre-image and image of point P is shown on the coordinate grid below.

Which of the following rules describes the transformation? A.(x,y)→(−y,x)

B.(x,y)→(−x,y)

C.(x,y)→(−y,−x)

D.(x,y)→(y,−x)

Solution

To determine the correct transformation rule, we need to analyze the coordinates of the pre-image point PP and its corresponding image point on the coordinate grid.

Here’s how to approach the problem:

  1. Identify the coordinates of the pre-image point PP. Let's denote them as (x,y)(x, y).
  2. Identify the coordinates of the image of point PP. Let's denote them as (x,y)(x', y').
  3. Compare (x,y)(x, y) and (x,y)(x', y') to determine the relationship and match it with one of the transformation rules.

Explanation of Transformation Rules:

  1. Option A: (x,y)(y,x)(x, y) \to (-y, x):

    • This is a 90° counterclockwise rotation around the origin.
  2. Option B: (x,y)(x,y)(x, y) \to (-x, y):

    • This is a reflection over the y-axis.
  3. Option C: (x,y)(y,x)(x, y) \to (-y, -x):

    • This is a 180° rotation around the origin.
  4. Option D: (x,y)(y,x)(x, y) \to (y, -x):

    • This is a 90° clockwise rotation around the origin.

Steps to Solve:

  • Provide the coordinates of the points PP (pre-image) and PP' (image) from the grid. If you share the image or provide the points, I will verify the transformation.

Would you like to provide the coordinates or upload the image for a detailed analysis?


Related Questions:

  1. How do you determine transformations using matrix operations?
  2. What is the effect of combining two rotations on a coordinate plane?
  3. How do you derive transformation rules for reflections?
  4. What is the general form of a rotation matrix?
  5. How can a geometric transformation be reversed?

Tip: Always check the orientation of the axes and the signs of the coordinates after the transformation. It helps in quickly identifying the type of transformation.

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Math Problem Analysis

Mathematical Concepts

Coordinate Geometry
Geometric Transformations
Rotation
Reflection

Formulas

(x, y) → (−y, x)
(x, y) → (−x, y)
(x, y) → (−y, −x)
(x, y) → (y, −x)

Theorems

Rotation Theorem
Reflection Theorem

Suitable Grade Level

Grades 8-10