Answer:
y=-1/2x + 5
Explanation:
First, since it is perpendicular, you will change the 2x to a fraction form, -1/2x.
Now, input -2(x) and 6(y) into the respective variables. 
So, you will get 6=-1/2(-2)+b 
6=1
-1 -1
5=b
So, the equation will be y=-1/2x + 5