Is it 729 lol why would you put it as mixed number
2/6 is equivalent to 1/3. I say this because, the greatest common factor they have is 2. When you reduce 2/6 by 2 your answer will be 1/3 because 2 divided by 2 is q and 6 divided by2 is 3.

Y - intercept is the value of y - coordinates of the point where the line intersects the y - axis, that is :
Y - intercept = 0