Video: Determining the Coordinates of a Point after Reflection

What is the image of the point (−8, 10) reflected over the 𝑦-axis?

00:56

Video Transcript

What is the image of the point negative eight, 10 reflected over the 𝑦-axis?

Let’s sketch what we know. On this coordinate plane, our point is negative eight ,10: negative eight on the 𝑥-axis, 10 on the 𝑦-axis. And here is our point.

To reflect this point over the 𝑦-axis, imagine you were going to fold the grid in half at the 𝑦-axis. The new image would be the same distance from the 𝑦-axis, but now on the right.

It would be eight units to the right of the 𝑦-axis. And the height of the point wouldn’t change. The image of our point is at eight, 10.

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.