SOLUTION: Write the following quadratic function in the vertext form. Then, identify the axis of symmetry and the coordinates of the vertex. y-x^2 + 4x -6 please help me I do not know

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Write the following quadratic function in the vertext form. Then, identify the axis of symmetry and the coordinates of the vertex. y-x^2 + 4x -6 please help me I do not know       Log On


   

Question 834016: Write the following quadratic function in the vertext form. Then, identify the axis of symmetry and the coordinates of the vertex.
y-x^2 + 4x -6
please help me I do not know how to solve this.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
?y-x%5E2+%2B+4x+-6 ?

Assuming you really meant, y=x%5E2%2B4x-6, you want to Complete The Square and adjust to y=a%28x-h%29%5E2%2Bk format. Thee term to both ADD and SUBTRACT on the right-side member is %284%2F2%29%5E2=4. Doing this will allow you to obtain a portion of right-side expression which is a perfect square, and an added or subtracted constant term.

y=x%5E2%2B4x%2B4-4-6
y=%28x%5E2%2B4x%2B4%29-4-6
You finish the work.
For further help and instruction, look at the and study the lesson, "What is Completing The Square? With Visual Explanation" and maybe also "Completing the Square to Solve General Quadratic Equation". Find these in the lessons link in my profile.