How can you tell the difference between a vertical strecth and a vertical shrink?

3 answers

mmmhh, if your shirt stretches, doesn't it get longer and if your shirt shrinks, doesn't it get smaller ?
That helps somewhaaat.c:
In terms of Algebra?
graph:
y = x^2 vs y = 3x^2 vs y = (1/2)x^2 and see what happens