Question

Triangle ABC with coordinates A (4,2), B (-1, 3), and C (2, -3) was reflected across the line

y=x. What is the image of B?
A. (3,-1)
B. (1, -3)
C. (-1, -3)
D. (-3,-1)

Answer 1

A. (3,-1)

Explanation:

A reflection of y = x would be:

`(x,y)\rightarrow(y,x)`

Therefore:

`(-1, 3) \rightarrow (3, -1)`

The correct option should be A.

Hope this helps.