How do you find the VERTEX of a parabola f(x)= -x^2-3x-6? Algebra Quadratic Equations and Functions Vertex Form of a Quadratic Equation 1 Answer Vinícius Ferraz Jul 22, 2015 (3/-2, 15/-4) Explanation: V = (-b/(2a), - \Delta / (4a)) \Delta = 9 - 4(-1)(-6) = 9 - 24 = -15 Answer link Related questions What is the Vertex Form of a Quadratic Equation? How do you find the vertex form of a quadratic equation? How do you graph quadratic equations written in vertex form? How do you write y+1=-2x^2-x in the vertex form? How do you write the quadratic equation given a=-2 and the vertex (-5, 0)? What is the quadratic equation containing (5, 2) and vertex (1, –2)? How do you find the vertex, x-intercept, y-intercept, and graph the equation y=-4x^2+20x-24? How do you write y=9x^2+3x-10 in vertex form? What is the vertex of y=-1/2(x-4)^2-7? What is the vertex form of y=x^2-6x+6? See all questions in Vertex Form of a Quadratic Equation Impact of this question 1289 views around the world You can reuse this answer Creative Commons License