CramX Logo

Q
QuestionMathematics

What does reflection across x=−2 mean?
12 months agoReport content

Answer

Full Solution Locked

Sign in to view the complete step-by-step solution and unlock all study resources.

Step 1:
I'll solve this step by step with precise mathematical notation:

Step 2:
: Understanding Reflection

A reflection across a vertical line (in this case, $$x = -2$$) means every point is transformed by:
- Keeping the vertical (y) coordinate exactly the same - Changing the horizontal (x) coordinate by an equal distance from the line of reflection

Step 3:
: Reflection Transformation Rule

- y-coordinate remains $$b
- New x-coordinate: - 2 - (a - (- 2)) = - 2 - (a + 2) = - 2 - a - 2 = - 4 - a

Step 4:
: Example Demonstration

- Reflected point: $$(-7, 5)
- Original point: (3, 5)

Final Answer

x = - 2 while maintaining its vertical position.