How do you move a number 2 decimal places

I depends on if you are going 2 decimal places to the left, or two decimal places to the right.

If you want to move a number two decimal places to the left you can multiply it by 0.01 or divide it by 100

x*0.01   or x/100

If you want to move two decimal places to the right, you can multiply it by 100.

x*100

The coordinates of point a right now is (-3,-1) you have to multiply these coordinates by a factor of 2 to get (-6,-2)