Which equation would be parallel to the line y=6

Answer 1

Any other y=number.

Answer 2

Y = 6 (in the context of a graph of the coordinate plane) means that value of the variable Y will be 6 no matter what the value of the variable X is. X can be zero or plus a million or minus a trillion, and Y will still be 6 so it is represented as a straight line parallel to the X-axis intersecting the Y-axis at 6. A line parallel to this line will have the same format of Y = with any number you want (zero, 1/4, -333.3, etc).