Question

A rectangle has vertices (–1, 1), (–4, 1), (–1, 3), and (–4, 3). If the rectangle is reflected over the y-axis, what algebraic rule can be used to find each of the new vertices?

Select one:


A. (x,y)→(−x,−y)


B. (x,y)→(–y,–x)


C. (x,y)→(y,−x)


D. (x,y)→(−x,y)

Answer 1

D. (x,y)→(−x,y)

Explanation:

Reflecting OVER the Y axis means it will end up on the other side of the Y axis line. The Y coordinates remain unchanged while the X coordinates invert. Attaching a crude diagram to help you picture it.