a. Express in vertex graphing form: ly = (x -p)2 + ql. (1 mark) Y = 1 x 2- 3x- 41 y = x 2 - 3 x + - 4 - 4 y = ( x - 3 ) - 25 4 | y = ( x - 2 ) + (- 5 ) SLC Pre Calculus 20 | Unit 5 sunwestDLC.ca b. Determine the vertex, the x and y intercepts and sketch the graph