How would i get my answer for this question?

Step-by-step explanation:

Given points are

And given transformation is

We will start from left to right.

First transformation is reflection about x-axis.

When we reflect about x-axis

So,

Now next transformation is dilation with a factor 4.

If we do dilation with a factor to the point

New co-ordinates after dilation became

So,

28

step-by-step explanation:

because that's the answer