For y(t) = x(t - to), how are the magnitude and phase of Y(jw) related to the magnitude and phase of X (jw)? (3 marks) (c) If r({) is the input to a linear time-invariant system and y(t) = x(t - to) is the output what is the impulse response of the system? (No proof is required in answering this part.) (1 mark) (d) Let the signal r(t) be defined as follows I(t) 1 x(t) = u(t + to) - u(t - to), that is, r(t) = 1 for -to