Explanation:
Please find the attachment.
We have been given an image on coordinate plane and we are asked to reflect our given image over the x-axis.
The rule for reflection for an image over x axis is:
. This means that after reflection about x axis, x coordinates remain same but y-coordinates are transformed into their opposite sign.
Let us give names to vertices of our pre-image. A(-5,-1), B(-5,-4) and C(-2,-4).
When we will reflect our pre-image (ABC) about x-axis, x coordinates will remain same, so x coordinates will remain negative.
Since y-coordinates will change into their opposite sign, so coordinates of y will be positive for our image as y-coordinates of pre-image are negative.
A A'
(-5,-1) (-5,1)
B B'
(-5,-4) (-5,4)
C C'
(-2,-4) (-2,4)
Therefore, coordinates of our image A'B'C' will be: A'(-5,1), B'(-5,4) and C'(-2,4).