Question

if △abc is reflected across the y - axis, what are the coordinates of a?
a. (4, - 2)
b. (4, 2)
c. (1, 2)

Explanation:

Step1: Determine original coordinates of A

From the graph, the coordinates of point A are (- 4,2).

Step2: Apply reflection rule across y - axis

The rule for reflecting a point (x,y) across the y - axis is (-x,y). For point A(-4,2), when reflected across the y - axis, x=-4 changes to -(-4) = 4 and y = 2 remains the same. So the coordinates of A' are (4,2).

Answer:

B. (4,2)