functions

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Tags

CCSS.8.F.A.1

Is this mapping a function or not a function? 

• Function
• Not a Function

Tags

CCSS.8.F.A.1

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Tags

CCSS.8.F.A.1

Is this graph a function or not a function? 

• Function 
• Not a Function 

Evaluate f(2):

f(x)=3x+1

• 7

• 9

• 11

• 13

Tags

CCSS.HSF.IF.A.2

Given that h(x)=x³-2, evaluate h(4)

• 62

• 10

• 64

• 12

Tags

CCSS.HSF.IF.A.2

Find f(-2)

• -3
• 6
• 8
• -6

Tags

CCSS.HSF.IF.A.2

Find f(0)

• -3

• 18

• 4

• 0

Tags

CCSS.HSF.IF.A.2

Find the domain of

 $f\left(x\right)\ =\ \frac{x-3}{x+4}$. 

•  $\left(-\infty,\ \infty\right)$ 

•  $\left(-\infty,3\right)\cup\left(3,\infty\right)$ 

•  $\left(-\infty,-4\right)\cup\left(-4,\infty\right)$ 

•  $\left(-\infty,-4\right)\cup\left(-4,3\right)\cup\left(3,\infty\right)$ 

Find the domain of each function.

 $f\left(x\right)=\sqrt{3x-21}$ 

•  $x\ge21$ 

•  $x\ge3$ 

•  $x\ge7$ 

•  $x\ge24$