Q. Put the quadratic into vertex form and state the coordinates of the vertex.y=x2+10x+16Vertex 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+10x+16To 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 10, so we take half of it, which is 5, and then square it to get 25.
Add and Subtract: Add and subtract the square of half the coefficient of x inside the equation.y=x2+10x+25−25+16We added and subtracted 25 to complete the square, and then we can group the perfect square trinomial and the constants.
Rewrite Equation: Rewrite the equation with the perfect square trinomial and combine the constants.y=(x2+10x+25)−9Now, we can write the perfect square trinomial as a squared binomial.y=(x+5)2−9This is the vertex form of the equation.
Identify Vertex: Identify the vertex of the parabola.The vertex form of the equation is y=(x+5)2−9.The vertex (h,k) can be read directly from the vertex form as (h,k)=(−5,−9).
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