http://www.ck12.org Chapter 1. Functions, Limits, and Continuity
In addition, we can shift graphs up and down. In general, if we havef(x),andcis some constant value, then the
graph off(x) +cis just the graph off(x)shiftedcunits up on they−axis. Similarly, the graph off(x)−cis just
the graph off(x)shiftedcunits down on they−axis.
Example 4:
f(x) =√x
f(x) =√x+ 3