1. For each of the following quadratic relations: (KU) S factor the quadratic relation so that it is in the form y = a(x - r)(x - s) *Don't forget to check for a common factor first!! (2 marks) ii) determine the y-intercept (1 mark) iii) determine the x-intercept(s) (1 mark) iv) determine the vertex (2 marks) a) y= x + 7x+6 16 b) y= -3x2 - 9x - 6