Question

What is a reflection rule that maps each triangle and its image?

Answer 1

From the diagram, the line of reflection is

`y=x`

Hence, the rule of reflection is

`R(x,y)=(y,x)`

Therefore, the reflection rule R(x,y) = (y,x), and the equation of the line t is y = x

Check

`\begin{gathered} P(2,3)\to P^(\prime)(3,2) \\ Q(-2,4)\to Q^(\prime)(4,-2) \\ R(-2,0)\to R^(\prime)(0,-2) \end{gathered}`