To find the axis of symmetry or the x-coordinate of the vertex, you must use ________ .
y = mx + b.x = -(b/2a).
x = h
(x + n) (x - n)

Question

To find the axis of symmetry or the x-coordinate of the vertex, you must use ________ .
y = mx + b.x = -(b/2a).
x = h
(x + n) (x - n)

anonymous · Answer

no sense

jhannybean · Answer

Theres 3 answer choices that do not make any sense.

anonymous · Answer

Oh sorry the fourth one is
(x + n) (x - n)

jhannybean · Answer

Theres two formulas you must know in dealing with parabolics. 

1. finding the solutions to the number of real solutions in a quadratic, the discriminant: $b^2-4ac$

2. the vertex of a parabola will always be solved for x, unless the parabola is turned in a different direction. this is represented by: $x= -\dfrac{b}{2a}$

jhannybean · Answer

Correction: #1 does not just reference real solutions, but it also tells you possible imaginary solutions as well.