
Function Notation Lesson
Presentation
•
Mathematics
•
9th Grade
•
Medium
Standards-aligned
PARIS MEEKY
Used 48+ 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 = ?
16
11
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
y = 21
y = 10
y = 11
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.
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.
8
Multiple Choice
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.
f(-3) = -2
y = -2
f(-3) = 10
y = 10
9
Multiple Choice
Find f(x)
if x= -2
Encuentra f(x)
si x = -2
f(-2) = 9
f(-2) = -15
f(-2) = -9
f(-2) = 21
10
Multiple Choice
f(5) = ?
25
125
5
10
11
EXAMPLE
Given f(x) = 4x - 9, find f(2).
12
Fill in the Blanks
13
EXAMPLE
Given f(x) = -x - 7, find f(-3)
14
Fill in the Blanks
15
EXAMPLE
Function Notation/
Notación de funciones
Objective: Evaluate functions written in function notation.
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