How do you graph y = \sqrt{4x+4}y=4x+4?

1 Answer
Nov 12, 2014

By rewriting a bit,

y=sqrt{4x+4}=sqrt{4(x+1)}=sqrt{4}sqrt{x+1}=2sqrt{x+1}y=4x+4=4(x+1)=4x+1=2x+1

Step 1: Sketching the graph of y=sqrt{x}y=x.

enter image source here

Step 2: Sketch the graph of y=2sqrt{x}y=2x by vertically stretching the graph in Step 1 by a factor of 22.

enter image source here

Step 3: Sketch the graph of y=2sqrt{x+1}y=2x+1 by shifting the graph in Step 2 to the left by 1 unit.

enter image source here


I hope that this was helpful.