Question

I thought it was (6,-4) but that isn't a choice.

Answer 1

To make a reflection over the y-axis of any point on the coordinate system, what you have to do is change the sign of the x-coordinate of the point, leaving the y-coordinate the same, following the rule:

`(x,y)\to(-x,y)`

Triangle DEF was reflected over the y-axis to triangle D'E'F'

The coordinates of point F are F(6,-4)

Reflect the coordinates of F using the rule:

`F(6,-4)\to F^(\prime)(-6,-4)`

The coordinates of F' are (-6,-4)