Question

In the graph below, point D is reflected across the y-axis. What are the coordinates of its image?
https://www.connexus.com/content/media/464825-322011-103847-AM-500296767.png

A. (3, –1)
B. (3, 1)
C. (–3, –1)
D. (–3, 1)

The coordinates of the vertices of CDE are C(1, 4), D(3, 6), and E(7, 4). If the triangle is reflected over the line y = 3, what are the coordinates of the image of D?

A. (3, –6)
B. (3, –3)
C. (3, 0)
D. (3, 9)