In: Math
Find the coordinates of the vertex for the parabola defined by the given quadratic function.
f(x) = x2 + 8x - 8
Given quadratic function is:
-----(1)
(1) is in the standard form of a parabolic equation.
The generalised equation of a parabola is:
------(2)
If the vertex of the parabola given by (2) is (h,k), then:
-----(3)
-----(4)
(f(h) is obtained by substituting "h" in the place of "x" in f(x))
From (2) we can understand that in the given f(x):
a=1, b= 8 and c=-8
From (3):
From (4):
Vertex is (h,k)=(-4,-24)
So the coordinates vertex of a parabola defined by the given quadratic function are: (-4,-24)