Q. Put the quadratic into vertex form and state the coordinates of the vertex.y=x2+14x+22Vertex Form: y=Vertex: (□,□)
Identify Vertex Form: Identify the vertex form of a parabola. The vertex form of a parabola is given by y=a(x−h)2+k, where (h,k) is the vertex of the parabola.
Complete the Square:Complete the square to transform the given quadratic equationy=x2+14x+22 into vertex form.First, we need to factor out the coefficient of the x2 term if it is not 1. In this case, it is already 1, so we can proceed to the next step.
Find Half Coefficient Square: Find the square of half the coefficient of the x term to complete the square.The coefficient of the x term is 14, so half of it is 7. Squaring 7 gives us 49.
Add/Subtract to Complete Square: Add and subtract the square of half the coefficient of x inside the equation.y=x2+14x+49−49+22This allows us to form a perfect square trinomial while keeping the equation balanced.
Rewrite Equation in Vertex Form: Rewrite the equation grouping the perfect square trinomial and combining the constants.y=(x2+14x+49)−27y=(x+7)2−27Now the equation is in vertex form.
Identify Parabola Vertex: Identify the vertex of the parabola using the vertex form. The vertex form is y=(x+7)2−27, so the vertex (h,k) is (−7,−27).
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