PLZ HELP I WILL GIVE BRAINLIST IF YOU ANSWER ALL OF THE QUESTIONS

Answer:
Sorry it is hard to explain how to graph it. But you just need to find the y intercept and the turning point. If you don't how to do that respond to this.
a) There is no x intercept
b) The y intercept is (0,-12)
c) The turning point is a maximum, (2,-8)
Step-by-step explanation:
Hope this helped.