N.linear! hope this helps!
Answer:
You need to add a picture for us to solve it
Step-by-step explanation:
Look up Quadratic Formula Pop Goes the Weasel
its like 30 seconds and is pretty easy to remember
To draw a graph of y=2-1/2x the point on the graph starts a 2 then the next point goes down because of the -1/2x so it would subtracting 0.5 from each previous point