Graph these and remember to identify what's going on -- and not by plotting points.  Label 5 points!

y = ( x - 1 )^2

y = ( x + 3 )^2

Let's sum up what we've got here:

When there's a number INSIDE with the x guy:

It's a horizontal shift!

y = ( x - h )^2

Find the x value that makes it  

and shift it horizontally to that spot.

*I always remember that, if the extra thing is inside with the x, then if affects x values -- these move it back and forth along the x-axis.

Check out this animation for a little review: