Question

What is the equation of the line of reflection in the following coordinate plane?
https://media.glynlyon.com/g_pal_2011/7/img_testa1_coordinate_plane_reflection.gif
x= -2
y= -2
x= -1
y= -1

Answer 1

y=-2
Vertices of both the triangles are equidistant from the line y=-2
you can check

Answer 2

Thanks, I see what you're saying.

Answer 3

yw