Question

Use the graph to answer the question.

What are the coordinates of
A
'
and
B
'
when AB is reflected in the y-axis? Show your work or explain how you got your answer.

Line segment A B is plotted on a coordinate plane. Point A is at left parenthesis 2 comma 5 right parenthesis. Point B is located at left parenthesis 6 comma 3 right parenthesis.

Answer 1

To reflect a point over the y-axis, we simply negate its x-coordinate. So to find the coordinates of A', we change the sign of its x-coordinate, giving us (-2,5). Similarly, to find the coordinates of B', we change the sign of its x-coordinate, giving us (-6,3).

Therefore, the coordinates of A' are (-2,5) and the coordinates of B' are (-6,3).