b. Using sentences, explain how changing the a-value from 1 to -1, from y = 1(x+d)(x +e) to y=-1(x+d)(x+e), would affect your graph from part a. Include in your explanation specific details on how the change impacts the graph in regards to: (3 marks) Direction of opening Domain . . . Range y-intercepts x-intercepts End of Assignment13. a. Sketch the graph of a quadratic function that opens upward and has two distinct zeros. One zero must be a positive integer and one a negative integer. State the corresponding equation in the forms y = a(x+d)(x +e) and y = a(x-p) + q where a =1 and d,eel. List the x- and y-intercepts of your graph. (4 marks)