Question

Reflect (7,3) across the y-axis.

Then reflect the result across the y-axis again.
What are the coordinates of the final point?

Answer 1

(7, 3)

Explanation:

If we reflect a point/figure across the y-axis, the rule is (x, y) -> (-x, y).

• (7, 3) -> (-7, 3)

Now, let's reflect it against the y-axis again.

• (-7, 3) -> (7, 3)

As you can see, we're back to where we started- at (7, 3). Thus, we can conclude that reflecting across the y-axis twice will result in the original point/figure.