Question

reflecting a triangle
consider reflections of δjkl.
what line of reflection maps point k to point k at (-5, 2)?
j(-3, 9)
l(-3, 2)
k(5, 2)
x - axis
y - axis
y = x
y = -x

Explanation:

Step1: Recall reflection rules

Reflection across y - axis changes sign of x - coordinate while y - coordinate remains same. Given point K(5, 2) and K'(-5, 2), y - coordinate is unchanged and x - coordinate changes sign.

Answer:

y - axis