This since about geometry

Question

Which of the following could be a mirror line on a coordinate plane?A

(1, 1)

B

(0, 10)

C

the origin

D

the x-axis

Answer 1

(1,1) has a line through it, x=y, which could be like a mirror, reflecting points on one side to the other side, but (1,1) is so close to the "mirror" line, that there is no reflection. But so could any line through that point. y=2 could be a mirror line reflecting (1,1) to (1,0)

same with B and C, You need another point to finda "mirrror" line. Or with just one point, any line through that point could be the "mirror line"

D, the x-axis is a line, the line y=0, which could be a mirror for two points or two other equations or lines .

y=0 is a mirror line for the points (1,1) and (1,-1) or for the points (0,10) and (0, -10)

the x axis could be a mirror line for 2 equations such as x=y and x=-y. reflect them over y=0 and they are mirror images