I need help with the questions in the picture. can you kindly provide solutions too? let me know if there are any questions.

3a. Write down the y-intercept of the graph of y = f (x). [1 mark] 3b. Sketch the graph of y = f (x) for -3 s r s 3 and -4 sys 12. [4 marks] The function has one local maximum at r = p and one local minimum at c = q. 3c. Determine the range of f (x) for p s : s q. [3 marks) A curve is defined by my = y" 12 + 4. 4. Show that there is no point where the tangent to the curve is horizontal. [4 marks)