Quiz 1 Math 1A

Evaluate the function f(x) = 12x - 6

find f(8)

• -90

• 90

• 96

• 66

Evaluate the function f(m) = 8m

find f(12)

• 20

• 90

• 96

• 4

What is a variable?

• a variable in the function

• an number that represents a letter

• A letter

• A letter that represents an unknown value.

Evaluate the function f(n)= -4n - 10

find f(20) =

• -80

• -90

• 90

• -24

What is a function?

• A rule in which every input is paired up with exactly one output.

• A rule in which every input has multiple outputs.

• A rule that has an (f) in front of numbers

• When people get together and have a meeting.

Solve for the input f(x)= 7x + 49

f(__) = 63

• 14

• 7

• 2

• 112

What is an input?

• The result of substituting a value for a variable in a function 

• A value you don't know

• A value that is substituted for the variable in a function

• A letter that represents an unknown value.

What is an output?

• A letter that represents an unknown value.

• The result of substituting a value for a variable in a function 

• A rule in which every input is paired up with exactly one output.

• A value that is substituted for the variable in a function

Solve.

f(x)= 5x - 15

f(___)= 45

• 60

• 25

• 12

• -12

Match the following

• 300

• f(x)= 10x + 30

  f(__) = 50

• -10

• f(x) = -8x - 12

  f(10)

• -92

• f(m) = -11x -44

  f(__) = 66

• 60

• f(x)= 10 x

  f(30)

• 2

• f(n) = 12n

  f(5)