Search for: Home › Forums › Topic Tag: y=9x2+9x-1 Viewing topic 1 (of 1 total) Topic Voices Posts Last Post Which equation is y = 9x^2 + 9x – 1 rewritten in vertex form? Started by: shobhits in: Math 1 2 2 years, 4 months ago shilpav Viewing topic 1 (of 1 total)