Answer:
A(5,3) ->A'(5,-3)
B(2,1) ->B'(2,-1)
C(-2,4) ->C'(-2,-4)
Explanation:
If a point is reflected over the x-axis, it ends up on the opposite side of the x-axis with the same distance from the x-axis.
So what that means is the x-coordinate will stay the same and the y-coordinate will be opposite of what it was.
So if we reflect each of your points through the x-axis you will get:
A(5,3) ->A'(5,-3)
B(2,1) ->B'(2,-1)
C(-2,4) ->C'(-2,-4)