Functions

How long is the race between Alberto and Bianca?

• 50

• 8

• 20

• None of them

At the beginning of the race, who's faster?

• Alberto

• Bianca

• None of them

• Both are the same

What's the minimum height of this function?

• 5 m

• 3 m

• 1 m

• 7 m

One of this graphs is not a function

• A

• B

• C

• D

One of them IS a function

• The top-left one

• The top-right one

• The bottom-left one

• The bottom-right one

Let  $f\left(x\right)=x\left(x-13\right)$  , then  $f\left(9\right)=$  

• 68

• -36

• 36

• 27

Let this be the graph of f. Which one is true?

• f(1)=1

• f(2)=1

• f(2)=0.4

• ∄ f(2)

Let this be the graph of f. Then f(1) =

• 0

• 3

• 2

• ∄

If you look at the increasing and decreasing intervals, one of them doesn't belong

• The top-left one

• The top-right one

• The bottom-left one

• The bottom-right one

One of them is convex

• The top-left one

• The top-right one

• The bottom-left one

• The bottom-right one