Q. Put the quadratic into vertex form and state the coordinates of the vertex.y=x2−4x−32Vertex 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=x2−4x−32To complete the square, we need to find a value that, when added and subtracted to the equation, forms a perfect square trinomial.The coefficient of x is −4, so we take half of it, which is −2, and then square it to get 4.We add and subtract 4 inside the equation to complete the square.
Add and subtract values: Add and subtract the value found inside the parentheses.y=x2−4x+4−4−32Now, group the perfect square trinomial and the constants.y=(x2−4x+4)−36
Factor perfect square trinomial: Factor the perfect square trinomial.y=(x−2)2−36Now we have the equation in vertex form.
Identify vertex: Identify the vertex of the parabola.The vertex form of the equation is y=(x−2)2−36.Comparing this with the standard vertex form y=a(x−h)2+k, we find that h=2 and k=−36.Therefore, the vertex of the parabola is (2,−36).
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