What is the vertex form of #y= x^2 – 7x – 4#? Algebra Quadratic Equations and Functions Vertex Form of a Quadratic Equation 1 Answer salamat Jul 18, 2017 #y = x^2 - 7 x - 4# use completing a square #y = (x - 7/2)^2 - (-7/2)^2 - 4# #y = (x - 7/2)^2 - 49/4 - 16/4# #y = (x - 7/2)^2 - 65/4# since # (x - 7/2)^2# is a +ve value, therefore it has a minimum vertex #7/2# at #(7/2, -65/4)# 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 3651 views around the world You can reuse this answer Creative Commons License