Question

reflect triangle efg across the line y = x. plot a point for each vertex.

Explanation:

Step1: Recall reflection rule

When reflecting across $y = x$, $(x,y)$ becomes $(y,x)$.

Step2: Identify E's coordinates

E is at $(-2,4)$, so its image is $(4, - 2)$.

Step3: Identify F's coordinates

F is at $(-2,1)$, so its image is $(1,-2)$.

Step4: Identify G's coordinates

G is at $(-1,1)$, so its image is $(1,-1)$.

Answer:

Plot $(4, - 2)$, $(1,-2)$, $(1,-1)$