Answer:
Step-by-step explanation:
Comment
If you do not have a graphing calculator the best thing to use is Desmos. Desmos is free -- anyone can use it and and the graphs can be used here on Brainly. I've downloaded the graph for you.
There are a couple of things you should notice.
The most downward point is (-5,-3)
The largest root is x = -2
The smallest root is x = - 8
Notice the roots are the opposite of what you are given. You will eventually learn how to do all of these things.