systems

First of all, I wholeheartedly greet my colleagues and the entire community! I’ve set the signal as m(t) = −t [ u(t) − u(t−2) ] and the impulse response as h(t) = 2 [ u(t−3) − u(t−4) ]. But while trying to find y(t), I ran into a small issue with the sketches. Because there is no overlap...

I salute the entire community. i find this way when finding the H(f) equivalent of this sinc expression, is it true? because I see it in the form of f/16 in some sources. which one is correct?