The graph is shown below. I used GeoGebra to create the graph. The graph is restricted on the domain 
meaning that everything to the left of x = 0 is not drawn, and the same for everything to the right of x = 2.
A table of values is included as well. Each row in the table represents an ordered pair point (x,y) that is on the blue cosine graph.
Answer:
Step-by-step explanation:
x^2 + 1 = 4
x^2 = 3
Im not sure about 6 but i think 4 is idk
No, they're not proportional to each other
