Q. Put the quadratic into vertex form and state the coordinates of the vertex.y=x2−8x+41Vertex 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=x2−8x+41We need to find a value to add and subtract to complete the square.The coefficient of x is −8, so we take half of it, which is −4, and then square it to get 16.We will add and subtract 16 inside the equation to complete the square.
Add/subtract square: Add and subtract the square of half the coefficient of x inside the equation.y=x2−8x+16−16+41Now, group the perfect square trinomial and the constants.y=(x2−8x+16)−16+41
Factor and simplify: Factor the perfect square trinomial and simplify the constants.y=(x−4)2−16+41y=(x−4)2+25Now we have the equation in vertex form.
Identify parabola vertex: Identify the vertex of the parabola.The vertex form of the equation is y=(x−4)2+25.Comparing this with the standard vertex form y=a(x−h)2+k, we find that h=4 and k=25.Therefore, the vertex of the parabola is (4,25).
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