SOLUTION: find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function.
f(x)=x^2-4x-1
Please help me solve.
Question 262790: find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function.
f(x)=x^2-4x-1
Please help me solve. Answer by drk(1908) (Show Source):
You can put this solution on YOUR website! First we must put this equation into vertex form. To do that we need to complete the square. I will jump right to vertex form as
Now, we have the vertex as (2, -5)
line of symmetry is the x-value of the vertex or x = 2.
Since the equation starts with (+), then the minimum will be at the vertex at (2,-5)
here is the graph
(