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Functional Understanding - Input Output
供稿人: Scales
(原作者: Cason)
Functions and Functional Understanding
input
output
f(x)
f(3)
x

  (3, 7)

The point represented by which ordered pair is NOT

 part of the function f(x) = x + 4?

  (2, 6)

(0, 4)

(2, 2)

What is the value of f(-2) for f(x) = 3x + 4 ?

input

  10

  -2

Is f(-2) input or output?
output

   1

  7

(3,-4) is part of a function.
Is 3 the input or out put?
Is -4 the input or output?
3 is the output
3 is the input
-4 is the output
-4 is the input

The function that describes the sequence 

4, 8, 12, 16... is g(x)=4x.

Click the true statement for the function.

g(4)=1

g(0)= 0

g(8)=2

g(2)=2

f(x) = 3x - 1

Which linear function matches these ordered pairs?

(-1, -8)

( 0,  -3)

( 1,    2)

 

g(x) = x - 3

h(x) = 5x -3

j(x) = 2x + 3

True

Linear function make a line.

False

In the equation f(x) = 4x2 when x = -3, f(x) = ?

-36

-12

x=-3 is the 
Input
output
12

36

12

1

In the equation f(x) = 4x when x = -3, f(x) = ?

-12

4/3
Position Number is the
Number of squares is the 
input
input
output
Output
Position Number is the
Number of squares can be determined with the functionf(x)=2x.  The number of squares for position 198 is
independent 
variable
0
198
396
99
dependent 
variable
The number of fillings is the 
To determine the number of fillings in a pita
 with a cost of $23.
The function to represent cost, C(n),
 with respect to number of fillings, n, is
C(n)=3n+2
Input
Substitute 23 for n.
Substitute 23 for C(n)
Output
The cost of producing yearbooks is C(n)= 120 + 5n,
where n is the number of yearbook produced 
and C(n) is the cost for production.
To determine the number of yearbooks with a cost of $360.
Substitute 360 for n.
The cost of production is the 
then solve for n.
Input
Output
Substitute 360 for C(n)
then evaluate
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