Vocab
the set of all input values
What is a domain?
You must bring your RPJ to class every time.
true.
Write the domain for these coordinates:
(0,6), (1,4), and (2,2)
acceptable: 0, 1, 2
Best: D = {0, 1, 2}
Y= cost in dollars
X = number of theater tickets needed
discrete
the set of all output values
What is a range?
You can use a Horizontal Line test to determine whether a graph represents a function.
False; A Vertical Line Test is used to determine whether a graph represents a function.
Write the range for these coordinates:
(0,6), (1,4), and (2,2)
good: 6, 4, 2
Best: R = {2, 4, 6}
X = hours driving 55mph
Y = distance traveled
continuous
a relationship that pairs each input with exactly one output
What is a function?
The domain for the function m-50-9d representing the amount of money m (in dollars) you have after buying d DVDs is continuous.
False; This graph would be discrete because you cannot buy part of a DVD.
This can be determined by using a mapping diagram or the vertical line test.
You can determine whether a relation is a function by using a mapping diagram or the vertical line test.
X = number of bars eaten
Y = calories consumed
continuous
the variable that represents input values. It can be any value in the domain. Hint: starts with the letter "I."
Independent variable
Slope is defined as the change in y (or rise) over the change in x (or run).
True.
Name three of the five ways a function can be described.
Functions can be described :
by an equation
by an input-output table
in words
by a graph
as a set of ordered pairs
X = number of cups of coffee you ordered
Y = Total cost
Discrete
A set of input values that consists of all numbers in an interval.
What is a continuous domain.
Every relation is a function.
False; A relation is not a function when an input has more than one output.
True or False: The domain is independent and the range is dependent.
True
X = number of problems answered correctly
Y = points earned
Discrete, need to argue for continuous