The equation of a parabola is y=x2−2x+8. Write the equation in vertex form.Write any numbers as integers or simplified proper or improper fractions.______
Q. The equation of a parabola is y=x2−2x+8. Write the equation in vertex form.Write any numbers as integers or simplified proper or improper fractions.______
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 square:Complete the square to transform the given equation into vertex form.The given equation is y=x2−2x+8. To complete the square, we need to find a value that, when added and subtracted to the equation, forms a perfect square trinomial with x2−2x. The value needed is (2/2)2=1. We add and subtract 1 inside the equation.
Add value: Add and subtract the value found in Step 2 to the equation.y=x2−2x+1+8−1This step creates a perfect square trinomial and maintains the equality by adding and subtracting the same value.
Rewrite equation: Rewrite the equation with the perfect square trinomial and combine like terms.y=(x2−2x+1)+8−1y=(x−1)2+7Now the equation is in vertex form, where (x−1)2 is the perfect square trinomial and +7 is the combination of the constants.
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