Point d (9, -8) is reflected to d' (9, 8)

Is a reflection across the x-axis

Step-by-step explanation:

The complete question is

Point D (9,-8) is  reflected to D' (9,8). Is it on the x axis or y axis?

we know that

The rule of the reflection of a point across the x-axis is

(x,y)> (x,-y)

the x-coordinate remains the same, but the y-coordinate is transformed into its opposite

In this problem we have

D (9, -8) > D' (9, 8)

The y-coordinate is transformed into its opposite

therefore

Is a reflection across the x-axis

it would be:

c.parallelogram.