Answer:
<h2>Compress.</h2>
Step-by-step explanation:
The transformation of functions refers to translation, reflection, compression and stretch. However, translation and reflection only change they position, but not the form. Compression and stretch are the two transformation that actually change the shape of a function, making it bigger or smaller towards one axis.
Therefore, the complete statement would be:
To change the shape of a function, you need to stretch or compress it.
