Quadratic Functions
What is the line called down the middle of the parabola?
The line of symmetry
What is the formula?
f(x)=ax
or y=abx
What is a function whose graph forms a straight line called?
A linear function
What is the difference in the shape of a linear and exponential function?
an exponential function can be a parabola and a linear function is a straight line
What block is math?
G block
Name the form: y=2(x+5)2+3
Vertex form
What is the shape of an Exponential function graphed?
A parabola
What is the standard form of a linear equation?
y=mx+b
What variable do all three equations have?
x
What is Mrs. Austin's favorite color?
Purple
Factor completely: 4x2-20x+25
(2x-5)2
What does f(x) represent in an exponential function?
dependent variable or output of the function
What are the independent and dependent variables in a linear equation?
Independent variable: x
Dependent variable: y
What are the three functions we are comparing?
Quadratic, exponential, linear
What is the name of our textbook's company?
McGraw Hill
Factor completely using two methods: 10x2-35x-20
5(x-4)(2x+1)
Is this equation exponential : y=3x-2
No, this is a linear function
Is this equation linear: x3 +y = -1
No, because x has an exponent other than one.
What makes key features of function graphs different?
The x and y-intercepts, intervals where the function is increasing, decreasing, positive or negative.
Where did Mrs. Austin go to college?
Armstrong in Savannah
Use quadratic formula to solve: y=x2-5x+3
4.3
Can an exponential function be negative?
No, they must always be positive.
What are the steps to solving a linear equation?
1) Simplify each side
2) Use -/+ properties to move the variables to one side
3) Use multiplication/division
4)Check your answer
5) Solve for the variable
What does the x represent in each function?
Quadratic: variable number
Exponential: Constant rate
Linear: Figure number
What is Ms. Mitchell's son's name?
Dakota!