Draw the y(t) signal if the signal x(t) shown below: 1. y(t) = x(t - 4) 2. y(t) = x(t + 2) x(4) 3. y(t) = 3x(-t) 4. y(t) = x(-t + 3) 5. y(t) = x( t/2 1) 6. y(t) = x( 3t + 4 ) 7. y(t) = x(t) u(t) %3D -1 0 I 2