Find the values of \( x \) and \( y \) in parallelogram PQRS. \[ \text { PT }=y, T R=4 x+1, Q T=2 y, T S=3 x+12 \]

Step 1 ：PT = TS \Rightarrow y = 3x + 12

Step 2 ：TR = QT \Rightarrow 4x + 1 = 2y

Step 3 ：Substitute: 4x + 1 = 2(3x + 12)

Step 4 ：Solve: x = -7, y = 9