Point (-4, 3) is reflected over the y-axis. What are the coordinates of the reflection?

Question

anonymous · Answer

a. (4, 3)
b. (4, -3)
c. (-4, -3)
d. (-4, 3)

anonymous · Answer

What does it mean to reflect across the y-axis?

anonymous · Answer

I.e, I'm not going to just give you the answer :)

anonymous · Answer

um, hold on.

anonymous · Answer

A reflection over the y-axis will change the sign of your x-coordinate (the number on the left).
(x,y) becomes (-x,y)

anonymous · Answer

so (-4,3)?

anonymous · Answer

Yup. Perfect. Because when you are on the right (for example) you have positive x, but when you reflect across the axis you now have -x and vice versa!

(-4,3) -> (-(-4),3) = (4,3) :P

anonymous · Answer

The perfect referring to your definition.

anonymous · Answer

oh wait, why do we have to do (-(-4),3)? i thought i already changed it?

anonymous · Answer

@malevolence19

mertsj · Answer

No.  You didn't change it.  (-4,3) is the same as (-4,3)

anonymous · Answer

oh nevermind! i wasn't looking at it correctly.
thanks @Mertsj @malevolence19