Domain and Range
Am I a function?
What's my function?
function equation
Graph What?
100
What is the domain of this function?
(-3, 1]
100
In a function, how many outputs can one input have?
Each input has one and only one output.
100
Evaluate y = 2x +1 when x = -3
y = -5
100
Whats the function if John gets paid $10 per hour(x)
f(x) = ?
f(x) = 10x
100
Based on the graph of function, What is y when x = 2?
y = 3
200
What is the range of this function:
[1, 5]
200
Yes
200
Evaluate y= x2 + x + 1 when x = -5
y = 21
200
Sally wants to go to an amusement park. The amusement park cost $120 per day(x) and an additional fee of $50.
f(x) = ?
f(x) = 120x + 50
200
Based on the graph of function, what is y when x =-5?
y = 0
300
What is the range of this function:
[-4, 0]
300
Is this a function and why?
No because x=8 has two outputs (3 and -3)
300
Evaluate y = x2 - 2 when x = -2
y = 2
300
You go to Florida and want to go jet skiing. It cost $100 per person(x) and $75 for the tour guide. What function represents this equation.
f(x) = ?
f(x) = 100x + 75
300
Based on the graph of the function, what is y when x = 4?
y = -2
400
What is the domain of this function?
[-4, 3]
400
Does the following table represent a function?
x y
1 2
2 5
6 2
2 9
5 1
No, because the input (x) of 2 has two different outputs (y)
400
Evaluate y = 4x2 - 1 when x= -2
y = 15
400
At the local cafe, a salad cost $5.75. Additional toppings cost $0.50 each. What is the function that represents the situation.
f(x) = ?
f(x) = 0.50x + 5.75
400
Based on the function, what is y when x = -3?
y = -3
500
Find the domain and range of this function
domain: [-3, infinity)
range: [-2, infinity)
500
No, vertical lines are not functions.
500
If y = 8 what is x if y = 2x + 4
x = 2
500
You take a class trip to the ice cream shop. They charge $5.00 for a cup of ice cream and $1.25 per topping added. What is the function that represents this problme?
f(x)= ?
f(x) = 1.25x + 5
500
Based on the function, what is x when y= 2
x=0