Reflecting on Slope
- I-Heng McComb
Reflecting the Line
Reflect Line AB across the line y = 8. Also reflect the slope triangle across y = 8.
How do the slope triangle shown for Line AB and its image (a slope triangle for Line A'B') compare?
Are the slopes of Line AB and Line A'B' equal? Explain why or why not.
Move your line of reflection up or down and also try vertical lines of reflection. What is the effect on slope when you reflect a line across a horizontal or vertical line of reflection?
1. Explore what happens when you reflect Line AB across the line y = x. 2. You can also change the pre-image line by moving Points A and B. Do the relationships you noticed before still hold?