I have pasted the full question below for context, but essentially, I'm having issues ironing out how quiver works for part a. I tried to mimic the example in the textbook, but it returns multiple errors, and I've checked the documentation for quiver, which hasn't helped.
[T, Y] = meshgrid(-10:0.2:10, -1:0.2:2);
S = (2*y - t)/(2*t - y);
quiver(T, Y, ones(size(S)), S), axis equal tight
xlabel ’t’, ylabel ’y’
title ’Direction Field for dy/dt = (2*y - t)/(2*t - y)’