Question

using the pencil, plot the reflection of point ( a ) across the line ( y = x ).

Explanation:

Step1: Recall the reflection rule

The reflection of a point \((x,y)\) across the line \(y = x\) is \((y,x)\).

Step2: Identify the coordinates of point \(A\)

Assume point \(A\) has coordinates \((2,-1)\) (from the graph position).

Step3: Apply the reflection rule

Using the rule \((x,y)\to(y,x)\), for \(A(2,-1)\), the reflection is \((-1,2)\).

Answer:

Plot the point \((-1,2)\) on the coordinate - plane.