Heyy can you help me solve all of the four questions fully and explain each step deeply please and thank you

1. Find the intersection of this line and this ellipse. (4) _ x2 312 _ 1 a: y 6 0 16 -l- M 2. Express this function as a composition in two different ways. (4) 1 f(:v) = 1 .2 3. Draw the phase line and trajectories for this autonomous differential equation, which describes a population. Describe the behaviour of the population for various starting values. (6) 31: = 2 n 4. Describe why continuity is not usually a problem for functions given by one expression, but needs to be carefully checked for piecewise functions. (4)