Writing and Graphing Quadratic Equations, Imaginary numbers

Standard form

F(x)=ax²+bx+c

Vertex form

a(x-h)²+k

Intercept form

a(x-p)(x-q)

Vertex

(h,k)

How to find vertex in standard form

H= -b/2a

K= plug answer from h into equation as x

X intercept

(p,0) (q,0)

Finding AOS of symmetry based on x intercepts

x=p+q/2

How to find standard form from intercept form

Multiply two binomials and then distribute a

How to find a from vertex coordinate and given point(s)

Make intercept form, plug (h,k) for (x,y)

if given x int, plug (q,0)

What is i equal to

i=\sqrt{-1}

What is \imaginaryI^2 equal to

\imaginaryI^2 = -1

Imaginary clock

How to tell if graph will be concave up or concave down

If a>0, y is concave up

If a<0, y is concave down