
Elwyn D. answered 02/20/16
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Year-round Geometry teacher including 5 summers of Honors Geometry
The point (5,3) translated by the vector <2,6>
(-5 + 2, -3 + 6)
(-3, -3)
When you reflect it across the line y = 0, the x coordinate remains the same and the y coordinate changes sign. (-3, 3)