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Function Notation Lesson

Function Notation Lesson

Assessment

Presentation

Mathematics

9th Grade

Medium

CCSS
HSF.IF.A.2, 6.EE.C.9

Standards-aligned

Created by

PARIS MEEKY

Used 47+ times

FREE Resource

8 Slides • 7 Questions

1

Function Notation/
Notación de funciones

Objective: Evaluate functions written in function notation.

2

Multiple Choice

Given: y is three times as big as x.

If x = 8 the y = ?


Dado: y es tres veces mayor que x.

Si x = 8, y = ?

1
24
2

16

3

11

4

8

3

Function Notation/Notación de funciones

a specific way to write a relation when it is a function.

Function Notation: f(x)
f(x) is another way to write y

Said out loud: "f of x"

Example:

y = 3x + 2 is a function.

So it can be written as f(x) = 3x + 2

una forma específica de escribir una relación cuando es una función.​
Notación de funciones:
f(x)
f(x) es otra forma de escribir y
Dijo en voz alta: "f de x"

Ejemplo:
y = 3x + 2 es una función.
Entonces se puede escribir como f(x) = 3x + 2

4

Multiple Choice

Given y = 2x + 1, find the value of y when x = 5


Dado y = 2x + 1, encuentre el valor de y cuando x = 5

1

y = 21

2

y = 10

3

y = 11

4

y = 25

5

Evaluating Functions/ Evaluación de funciones

The questions we answered

Given y = 2x + 1, find the value of y when x = 5.

Can be asked this way

Given f(x) = 2x + 1, find f(5).

Las preguntas que respondimos
Dado y = 2x + 1, encuentre el valor de y cuando x = 5. ​

Se puede preguntar de esta manera
Dado f(x) = 2x + 1, encuentre f(5).

6

Function Machine

You will also see this type of function machine.


You can see that x is being put into the machine, and f(x), which is the output, is coming out.

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7


Example Ejemplo 1

Here, we're told that our rule is

f(x) = -2x +4 and that x is equal to -3.


When we input -3 into our equation, we get an output of 10.


Make sure you are using FUNCTION NOTATION. f(-3) = 10. This is read f of -3 equal 10.

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8

Multiple Choice

Question image

Let's Try it:

If the input is -3, determine the corresponding output.

Vamos a intentarlo:

Si la entrada es -3, determine la salida correspondiente.

1

f(-3) = -2

2

y = -2

3

f(-3) = 10

4

y = 10

9

Multiple Choice

Question image

Find f(x)

if x= -2


Encuentra f(x)

si x = -2

1

f(-2) = 9

2

f(-2) = -15

3

f(-2) = -9

4

f(-2) = 21

10

Multiple Choice

Question image

f(5) = ?

1

25

2

125

3

5

4

10

11

EXAMPLE

​Given f(x) = 4x - 9, find f(2).

12

Fill in the Blank

13

EXAMPLE

​Given f(x) = -x - 7, find f(-3)

14

Fill in the Blank

15

EXAMPLE

Function Notation/
Notación de funciones

Objective: Evaluate functions written in function notation.

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