Consider the function; ????=3x6????+9 (i) Identify the coordinates of the turning point, and the nature of this turning point. (ii) Determine where the function crosses

Consider the function;
????=3x²−6????+9
(i) Identify the coordinates of the turning point, and the nature of this turning point.
(ii) Determine where the function crosses the vertical axis.
(iii) Sketch the function by-hand, annotating your sketch appropriately.
b) Consider the function;
????=−3????²+4????+11
(i) Identify the coordinates of the turning point, and the nature of this turning point.
(ii) Determine where the function crosses the vertical axis.
(iii) Sketch the function by-hand, annotating your sketch appropriately.
(iv) Inspect your graph and estimate the location of both the negative and positive roots.n