Help, I need the following question about matrices solved

[Tek1Atom]

Homework Statement

Find the image location of point (5,2) after reflection in the x-axis followed by rotation through 180 degrees about the origin.

Homework Equations

Matrix Transformation

The Attempt at a Solution

None, need help!

 

[iamalexalright]

Well, can you do the first part of the question? (ie. the reflection)

 

[Tek1Atom]

I know that the matrix A which represents reflection in the x-axis is:

1 0
0 -1

But don't really know anything else about solving this question as it's all new to me...

 

[iamalexalright]

Forget about the matrix representation for now...

What is the image of (5,2) reflected on the x-axis?