Solve the following math problem step by step. The last line of your response should be of the form Answer: \boxed{$Answer} where $Answer is the answer to the problem.

<image>If $FK = 3x - 1$, $KG = 4y + 3$, $JK = 6y - 2$, and 
$KH = 2x + 3$, find $y$ so that the quadrilateral is a parallelogram. 