Question

What Is the line of reflection between pentagons PQRST and P'Q'R'S'T' ?

A) x = 0

B) y = x

C) y = 0

D) x = 1​

Answer 1

A

Explanation:

From the diagram:

• P(-4,6)→P'(4,6);
• Q(-7,4)→Q'(7,4);
• R(-6,1)→R'(6,1);
• S(-2,1)→S'(2,1);
• T(-1,4)→T'(1,4).

The general rule of this reflection is

(x,y)→(-x,y)

and this is reflection across the y-axis. The y-axis has the equation x=0.