A snow vendor collects data on the number of snow cones he sells per day and the daily temperatures? Which is the dependent variable?
What is the number of snow cones?
100
Given f(x) = 2x -2, find f(3).
What is 4?
f(3)=2(3)-2= 4
100
Is the following relation a function?
{(0,2),(-1,3),(3,2),(-4,5)}
What is yes?
200
Usually seen as f(x)
What is function notation?
200
Given p(s) = s/2 + 3, find p(5).
What is 5.5?
200
A teacher wants to see if there is a relationship between her students' test scores and the amount of time they study. Which is the independent variable?
What is the amount of time they study?
200
Given h(x) = 2x², find h(-2).
What is 8?
h(-2) = 2(-2)² = 8
200
Is the following relation a function?
{-2,2),(0,1),(-2,3),(3,-1),(0,3)}
What is no?
(the x-values -2 and 0 repeat)
300
A set of all the x-values; the inputs.
What is domain?
300
Which of the following represents a function?
A: {(2,3), (3,4), (5,1), (6,2), (2,4)}
B: {(2,3), (3,4), (5,1), (6,2), (7,3)}
C: {(2,3), (3,4), (5,1), (6,2), (3,3)}
What is B?
(In A, the x-value of 2 repeats; in C, the x-value of 3 repeats)
300
Independent Variables are the labels on the ______axis?
What is x-axis?
300
In this function, which part of the function represents the y-variable or dependent variable?
(f(x) or x?)
f(x)=3x +2
What is f(x)?
300
True or False?
A function can have repeated y-values?
What is true?
400
A method for determining whether or not a graph represents a function.
What is the vertical line test?
400
Given f(x) = 2x² - 3x + 6, find f(2.5).
What is 11?
2(2.5)² - 3(2.5) + 6
400
In the following function, which is the independent variable? (x or y?)
y = 3x + 2
What is x?
400
What is the value of x if f(x)=10?
f(x) = x/2
What is 20?
f(x) = 10 = x/2
multiply both sides by 2
20 = x
400
Functions cannot have repeated _______values.
What is x?
500
A relationship where there is exactly one output for every input.
What is a function?
500
Which of the following is not a function?
x = -8
y = -8
What is x = -8?
500
In the following equation, what is the dependent variable? (p or s?)
p = 4s
What is P?
500
Solve for x if f(x) = -8.75
f(x) = x² - 15
x = 2.5 or -2.5
f(x) = -8.75 = x² - 15
add 15 to both sides
find the square root of both sides
square root of 6.25 = 2.5 or -2.5
500
Does the table below represent a function?
domain: {-2, 4, 8, 9, 22}
range: {-1, -1, -1, -1, -1}