1 is not. 2 is. 3 is not. 4 is. 5 is. 6 is. 7 is not. 8 is.
The answer = 3x^4+13x^3+20x^2+24x
Answer:
They are not co-linear.
Step-by-step explanation:
For three point's to be co linear the slopes of the lines connecting them should be same
Mathematically we can write for 
to be co-linear we should have

Applying the given values we obtain

As we can see the values are not equal thus the points are not co-linear.