Quadratic

Question 1

Standard Form of a Quadratic

Answer 1

y=ax^2+bx+c

This form reveals the y-intercept (c)

Question 2

Vertex Form

Answer 2

y=a(x-h)^2+k

This form tells me the vertex (h,k) ***h is opposite of what’s in parentheses

Question 3

h

Answer 3

-b/2a

Question 4

k

Answer 4

Plug h into x and evaluate

Question 5

Vertex

Answer 5

Max or a min point, also can be seen as the center of the parabola.

Question 6

Factored Form of a Quadratic

Answer 6

(x+a)(x+b)
a and b can be negative or positive
Reveals the zeros of the function

Question 7

Zeros

Answer 7

x-intercepts
Solutions
Roots
f(x)=0

Question 8

Complex Number

Answer 8

a+bi

Made up of a real number and an imaginary number

Question 9

i

Answer 9

you sqrt a negative number

sqrt(-25)=+-5i

Question 10

i^2

Answer 10

i^2=-1

***Multiplying complex numbers

Question 11

Domain

Answer 11

All x-values that are part of your function. Also called the inputs.
**The domain for quadratic equations is all real numbers

Question 12

Range

Answer 12

All y-values that are part of your function. Also knowns as outputs. Always restricted for quadratic equations.