Question

Point A (-4,2) and Point B (-7,2) form Segment AB. When reflected over the y-axis, what is the x-coordinate of B?

a) -7
b) 4
c) 7
d) -4

Answer 1

The x-coordinate of point B after reflection over the y-axis is 7 (Option C).

Step-by-step explanation:

When a point is reflected over the y-axis, its x-coordinate changes sign while the y-coordinate remains the same.

In this case, point B has coordinates (-7,2) before reflecting.

When we reflect it over the y-axis, the x-coordinate (-7) changes sign to become 7.

So, the x-coordinate of B after reflection is 7 (Option C).