Question: what is the difference between vertical and horizontal compression?
Answer: A vertical compression (or shrinking) is the squeezing of the graph toward the x-axis. ... A horizontal compression (or shrinking) is the squeezing of the graph toward the y-axis. • if k > 1, the graph of y = f (k•x) is the graph of f (x) horizontally shrunk (or compressed) by dividing each of its x-coordinates by k.