Question

Need a good and CLEAR explanation with all steps indicated, and in legible handwriting (preferably typed-up).

(See photo)

Answer 1

if you replace y with 1 this starts to look like you're just paraming an ellipse.

and that's v do-able
http://www.mathopenref.com/coordparamellipse.html

and for the tangent, many ways but simplest might be to just differentiate \(\frac{\dot y}{\dot x}\)