Answer:
I would say it is D
Step-by-step explanation:
Replace x with a couple of numbers, solve for Y them mark those points on the graph and connect with a line.
See picture:
Answer:
2l^2 + 2m^2 + 2n^2 + 2nl + 2lm + 2mn
Second one's answer ^
<em><u>Not sure about that first one..</u></em>
Answer:
a,c and possibly d
Step-by-step explanation: