What's that mean?
All the inputs or x-values included in a function are called the ______________
Domain
Given f(x) = x + 2, what point on the coordinate plane corresponds to x = 4?
(4, 6)
Given f(x) = x + 2, evaluate f(0)
f(0) = 2
The function C gives the cost of a meal, in dollars, based on the amount of meat purchased, in pounds.
What does C(2) = 35 tell us about a purchases meal?
The cost of a meal with 2 lbs of meat is $35.
All the outputs or y-values in a function are called the _________
Range
Given f(x) = -3x - 6, what point on the coordinate plane corresponds to x = 2?
(2, -12)
Given g(x) = 2x + 8, evaluate g(-2).
g(-2) = 4
The function C gives the cost of a meal, in dollars, based on the amount of meat purchased, in pounds.
Use function notation to express purchasing a meal with 3 pounds of meat costing $50.
C(3) = 50
one
Given f(x) = x + 2 and a domain of {1,4} what is the range?
{3, 6}
Given C(x) = .5x - 6, evaluate C(12)
C(12) = 0
How many days until Christmas? (Do not count today)
71 days
What test is used to determine if a graph is a function or not?
vertical line test
Given f(x) = -2x - 2 and a domain of {0,1,2} find the range. Then list the points formed by the domain and range.
(0,-2), (1,-4), (2, -6)
Rewrite the following equation as a function of x.
2x + y = 16
f(x) = -2x + 16
The function P gives the average price of gasoline, in dollars, since the year 1970.
What does P(10) = 1.19 tell us about the price of gasoline?
In 1980, the average price of gasoline was $1.19.
Where is the dependent variable found on a graph?
on the y-axis
Given f(x) = -.5x - 2 and a domain of {-2, 0, 2} find the range. Then list the points formed by the domain and range.
(-2, -1), (0,-2), (2, -3)
Rewrite the following as a function of x.
6x + 2y = 12
f(x) = -3x + 6
The function P gives the average price of gasoline, in dollars, since the year 1970.
Use function notation to express the average price of gasoline being $1.51 in 2000.
P(30) = 1.51