Math Problem Statement

Point T is at (-2, 5). What are the coordinates of point T' after a reflection across x = 0 and then y = 0?

Solution

To solve this problem, we need to perform two transformations on point T=(2,5)T = (-2, 5).

Step 1: Reflection across x=0x = 0 (the y-axis)

  • Reflecting a point across the y-axis changes the sign of the x-coordinate while keeping the y-coordinate the same.
  • For T=(2,5)T = (-2, 5), after reflection across the y-axis, the coordinates become T=(2,5)T' = (2, 5).

Step 2: Reflection across y=0y = 0 (the x-axis)

  • Reflecting a point across the x-axis changes the sign of the y-coordinate while keeping the x-coordinate the same.
  • For T=(2,5)T' = (2, 5), after reflection across the x-axis, the coordinates become T=(2,5)T'' = (2, -5).

Final Answer

The coordinates of point TT'' after both reflections are: (2,5)(2, -5)

Would you like more details or have any questions?


Related Questions

  1. What would be the coordinates if TT was reflected only across the x-axis?
  2. How would the coordinates change if the initial point was at (2,5)(-2, -5) instead?
  3. What transformations keep a point at the same coordinates?
  4. How do reflections across diagonal lines, like y=xy = x, affect coordinates?
  5. If we reflect the point across the line y=xy = -x, what will be the result?

Tip

For reflections, changing the sign of the coordinate perpendicular to the line of reflection can help quickly determine the result.

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Math Problem Analysis

Mathematical Concepts

Coordinate Geometry
Reflections

Formulas

Reflection across x-axis: (x, y) → (x, -y)
Reflection across y-axis: (x, y) → (-x, y)

Theorems

Reflection Theorem

Suitable Grade Level

Grades 8-10