Answer:
Graph will open same way and is narrower.
Step-by-step explanation
If: f(x)= x^4
f(-2x)= (-2x)^4
Negative sign usually flips the graph and make it open to the opposite direction. Â In this case since the function is to the 4th degree and the negative sign is included. The negative is basically ignored.
The term in front of x (a) determines how wide the graph opens. The bigger the a value the faster the slope increases so the narrower the graph opens.
Think if the slope is 4 vs 1/4.
Hope this helps