linear functions
exponential functions
quadratic functions
formulas
solve
100
What does the graph of a linear function look like?
its a straight line
100
What does the graph of an exponential function look like?
rises or falls sharply and flattens out; a "swoop"
100
From a table, how do you determine a quadratic function?
second differences
100
What type of function is this: f(x) = 3x
exponential function
100
y = 2x + 7 if x = -4
y = -1
200
Define slope
constant rate of change
rise over run
200
What is the standard form of an exponential function?
y=a(b)x
200
What is the highest degree of a quadratic equation?
2 (squared)
200
What type of function is this: f(x) = -x2 + 3x - 9
quadratic function
200
Find the solutions: x2 + 3x - 10
2 and -5
300
How do you determine if a function is linear?
Has a constant (slope); add or subtract the same amount each time; graph is a straight line
300
Where is the variable in an exponential function?
in the exponent
300
What shape is the graph of a quadratic function?
U-shaped curve (parabola)
300
The function y = 5x - 2 is what kind of function?
linear function
300
Evaluate y = 3(2)x when x = 4
48
400
What kind of slopes can a linear function have?
positive, negative, zero, undefined
400
What are the two types of exponential functions?
growth and decay
400
What is the major difference between an exponential and a quadratic function?
quadratic has an exponent of 2, exponential has an exponent of x
400
Which type of function would you use for this:
Joe has $75 in a savings account and he adds $35 each week
linear
400
CHALLENGE:
Find the value of x: 81 = 3x
4
500
The standard form of linear equations is ____
y = mx + b
500
Instead of a constant difference (slope), exponential functions have a ____
common ratio
growth factor
"multiplier"
500
True or False: the graphs of quadratic functions must always touch or cross the x-axis
False
500
Does this describe exponential growth or decay?
A chunky rhino is put on a diet and loses 0.5% of his body weight every week
decay
500
CHALLENGE:
Find the value of x: 128 = 4(2)x
5