Triangle pqr is reflected across a line, p = (4,–5), and p’ = (–4, –5). what is the line of reflection?
a. the x-axsis
b. the y-axsis
c. the line y=x
d. the line y = -x

B) The y-axis.
It helps to draw it, or even imagine the point. If you want to look at just this point, you see 4,-5 became -4,-5. Since only the x-point changed, it reflected from the y-axis.

The answer is a good luck