Glencoe Math: Course 1, Volume 1
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Glencoe Math: Course 1, Volume 1 View details
7. Graph on the Coordinate Plane
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Exercise 33 Page 409

To reflect a point in the x-axis, we use the same x-coordinate and take the opposite of the y-coordinate.

(4.75,2.25)

Practice makes perfect

To reflect a point in the x-axis, we use the same x-coordinate and take the opposite of the y-coordinate. Doing it twice will result in coming back to the original point. (x,y) → (x, - y) → ( x, -( - y) ) = (x,y)We start from a certain point and get to (4.75, -2.25) by reflecting it across the x-axis. So, we should reflect it once again to get back to the original point. (4.75, -2.25) → (4.75, -(-2.25)) Let's simplify the result. (4.75, -(-2.25)) = (4.75,2.25)