A figure has a vertex at (-1, -3). If the figure has line symmetry about the x-axis, what are the coordinates of another vertex of the figure?

Question

anonymous · Answer

|dw:1408849068326:dw|
Sorry for the shoddy diagram. The point at (-1,-3) is your original vertex and you want to find the other point, as shown in the diagram. Considering the symmetry is about the x axis,  the x value would stay the same but the y value should be the negative of the original y value.
Always draw a diagram to help yourself.

anonymous · Answer

Sorry, by negative I mean opposite sign (multiply anything by -1 and it should give an opposite sign).

anonymous · Answer

oh!! thank you so much!! (: @Jesusc

anonymous · Answer

No problem :)