Question

Quadrilateral ABCD has vertices at A(6,3), B(3,9) C(6,6) and D(12,3). It is reflected across the y-axis. What are the new coordinates? Explain.

Answer 1

If you reflect a point through the y-axis, you will negate the x-coordinate of the point. The new coordinates of the points are:
A'(-6, 3), B'(-3, 9), C'(-6, 6), and D'(-12, 3).

Answer 2

@ Kirsten..How come we understand about this in Picture..Can you brief me