Question 176242
Step 1) Translate point (2,1) to origin. You must also translate every other point.


Step 2) Rotate A(1,3) and B(2,5) about origin 90 degrees counterclockwise. Use the matrix

<pre>
|0 -1|
|1  0|
</pre>

Step 3)

Translate back to (2,1) 


Step 4)


Reflect by switching coordinates of every point



Answer: A'' is (0,0) and B'' is (2,-1)