Question

the point (0, -7) is reflected across the x - axis. what are the coordinates of the new point? a) (0, -7) b) (0, 7) c) (7, 0) d) (-7, 0)

Explanation:

Step1: Recall reflection rule

When a point $(x,y)$ is reflected across the x - axis, the x - coordinate remains the same and the y - coordinate changes its sign.

Step2: Apply rule to given point

The given point is $(0, - 7)$. After reflection across the x - axis, the x - coordinate stays $0$ and the y - coordinate becomes $-(-7)=7$. So the new point is $(0,7)$.

Answer:

B. (0, 7)