Q. Put the quadratic into vertex form and state the coordinates of the vertex.y=x2−12x−13Vertex Form: y=Vertex: (□,□)
Identify Vertex Form: Identify the vertex form of a parabola.The vertex form of a parabola is y=a(x−h)2+k, where (h,k) is the vertex of the parabola.
Complete the Square:Complete the square to rewrite the quadratic equation in vertex form.Given equation: y=x2−12x−13To complete the square, we need to find a value that, when added and subtracted to the equation, forms a perfect square trinomial with the x2 and −12x terms.The value to complete the square is (b/2)2, where b is the coefficient of the x term.In this case, b=−12, so (b/2)2=(−12/2)2=(−6)2=36.
Add Value Inside Equation: Add and subtract the value found in Step 2 inside the equation.y=x2−12x+36−36−13y=(x2−12x+36)−49Now, the equation includes the perfect square trinomial (x2−12x+36).
Factor and Simplify: Factor the perfect square trinomial and simplify the equation.y=(x−6)2−49This is the vertex form of the quadratic equation.
Identify Parabola Vertex: Identify the vertex of the parabola from the vertex form.The vertex form is y=a(x−h)2+k, so the vertex (h,k) is (6,−49).
More problems from Convert equations of parabolas from general to vertex form