Function Vocabulary
What is the range of a function?
a. The set of all possible outputs of a function (the x values)
b. The set of all possible outputs of a function (the y values)
c. The set of all possible inputs of a function (the x values)
d. The set of all possible inputs of a function (the y values)
b. The set of all possible outputs of a function (the y values)
You are given the equation f(x)=3x. Solve the following:
1.f(2)
2. f(0)
3. f(4)
1. 9
2. 1
3. 81
You are given the equation, f(x) = 10x. Solve the following:
1. f(-2)
2. f(-6)
3. f(-1)
1. 0.01
2. 0.000001
3. 0.1
Fredy has invested some money in the bank to save for his graduation party. He uses the function f(t) = 500(1.1)t to estimate the value of his savings account. t is time in years
1. In this situation, what does 500 represent?
2. In this situation, what does f(4) = 732 mean?
1. The money Fredy already has in his account at the start.
2. After 4 years, Fredy has $732 in his savings account.
Solve the equation for x.
x - 4 = 26
x = 30
What is the domain of a function?
a. The set of all possible outputs of a function (the x values)
b. The set of all possible outputs of a function (the y values)
c. The set of all possible inputs of a function (a.k.a. the x values)
d. The set of all possible inputs of a function (the y values)
c. The set of all possible inputs of a function (the x values)
Solve the equation when x =2.
2.7(4)x+1 + 1.5
174.3
You are given the equation, f(x) = 5-x+3. Solve the following:
1. f(-5)
2. f(-3)
3. f(7)
1. 3128
2. 128
3. 3.000...
Find the bank account balance of Lauren's account if she starts with $100, her account has an annual increase rate of 4%, and money is left in her account for 12 years.
$160.10
Solve the equation for x.
x/10.5 = -12.1
x = -127.05
What is a function?
a. A relation between two sets where each output has one and only one input.
b. A relation between two sets where each input has one and only one output.
c. A relation between two sets where each output has 2 inputs.
b. A relation between two sets where each input has one and only one output.
You are given the equation, f(x) = -42x+3. Solve the following:
1. f(2)
2. f(3)
3. f(0)
1. -16384
2. -262144
3. -64
You are given the equation, f(x) = (-3/2)(3)-x. Solve the following:
1. f(1)
2. f(1.4)
3. f(2)
1. -0.5
2. -0.322...
3. -0.1666....
In 1999, 285 people owned a cell phone in a small town called Centerville. The number of people with a cell phone increased by 75% each year after 1999. How many people had a cell phone in 2008? Round to the nearest whole number.
43,872 people
Solve the equation for x.
1. (1+x)/-4 = -1
1. x=3
Which of the following is an appropriate definition of a VARIABLE?
a. Two expressions combined with an equal sign.
b. Two expressions combined with an inequality sign.
c. A number being multiplied with a variable
d. Expressions combined with +, −,× and ÷
e. A letter or symbol that represents an unknown number
f. A number with no variable
Solve the 2 inequalities for x.
1. 10 + 5x > -55
2. x/-5 + 3 > 6
1. x> -13
2. x< -15
Which of the following is an appropriate definition of an EQUATION?
a. Two terms combined with an equal sign.
b. Two terms combined with an inequality sign.
c. A number being multiplied with a variable
d. Terms combined with +, −,× and ÷
e. A letter or symbol that represents an unknown number
f. A number with no variable
Solve the inequality for x.
-1/2 (x - 7/5 ) < 9/20
x > 1/2 or 0.5