Which graph shows a triangle and its reflection image over t

Which graph shows a triangle and its reflection image over the x-axis?

Solution

Reflection is known as flipping or folding. If reflection is done for x-axis, all the y-coordinate values change the sign and the x-coordinate values are intact.

Here Option D would be the answer as it is flipped with respect to x-axis. Here all the x-axis values are the same and y-axis values changed the sign.

Note: Option A is flipped with respect to y-axis as all the y-coordinates are same and x-coordinates are inverted.