posted by Mary .
Find the vertex, the line of symmetry, the maximum or minimum of the quadratic function, and graph the function.
What is the vertex? (Type an ordered pair)
What is the equation of the line of symmetry?
What is the maximum/minimum of f(x)?
Is the value, f(2)= -7 a minimum or maximum?
F(x) = X^2 -4X -3.
V(h , k),
h = Xv = -b/2a = 4/2 = 2,
k = Yv = F(2) = 2^2 -4*2 -3 = -7,
V(2 , -7).
Line of sym.: X = h = 2.
F(2) = -7 = min. (Eq opens upward)