# 1TTO §7.5 Comparing graphs PART ONE

§7.5 Comparing graphs
This is only PART ONE ... (as in famous Movies)
So there's more to come ...
in the next lesson!

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Slide 1: Slide
WiskundeMiddelbare schoolhavo, vwoLeerjaar 1

This lesson contains 17 slides, with interactive quizzes and text slides.

Lesson duration is: 50 min

## Items in this lesson

§7.5 Comparing graphs
This is only PART ONE ... (as in famous Movies)
So there's more to come ...
in the next lesson!

#### Slide 1 -Slide

§7.5 Comparing graphs
This paragraph is done in 2 lessons, because it contains quite a lotta content.
Let's start doing exercise 32 in a little different way from the book.

exercise 32

#### Slide 3 -Slide

exercise 32
Because 2 graphs are drawn in 1
coordinate system,
we can COMPARE them!

#### Slide 4 -Slide

exercise 32
After how many days is the price
you pay at Praxis
the same as at Finefix?
Key in in next slide.

#### Slide 5 -Slide

After how many days is the price
you pay at Praxis
the same as at Finefix?

#### Slide 6 -Open question

exercise 32
If you hire a car for 2 days, what is
cheapest?

#### Slide 7 -Slide

For 2 days ....
A
better choose for Praxis
B
it depends
C
better choose for Finefix
D
doesn't matter

#### Slide 8 -Quiz

Explanation exercise 32,
If you hire a car for 2 days, what is
the cheapest?
1. Go to '2 days' on the horizontal axis.
2. Go up and see which graph is highest.
3. Well, Finefix' graph lies lower,
4. so Finefix is cheapest for 2 days!

#### Slide 9 -Slide

exercise 32
If you hire a car for 5 days,
which company is cheapest then?
Key in in next slide.

#### Slide 10 -Slide

For 5 days ...
A
Praxis is cheapest.
B
Doesn't matter.
C
Finefix is cheapest.
D
idk

#### Slide 11 -Quiz

Explanation exercise 32,
If you hire a car for 5 days,
which company, which is cheapest?
Go to 5 days on the horizontal axis.
Go up and see which graph lies lowest.
Praxis' graph is lowest for 5 days,
so then the price is lowest too!

#### Slide 12 -Slide

exercise 32
Which graph has a fixed amount?

#### Slide 13 -Slide

A fixed amount ...
A
Graph for Praxis has one.
B
No clue at all.
C
Graph for Finefix has one.
D
Both graphs have one.

#### Slide 14 -Quiz

Explanation exercise 32,
Which graph has a fixed amount?
The graph for Praxis starts at 10 euros.
That's what you have to pay before you have used
this carpet cleaner for even one minute!
That's why we call this a FIXED AMOUNT.
The amount is fixed, no matter how long you use it.

#### Slide 15 -Slide

In this lesson you have learned .....
I'd much better ask you, what you've learned!
Think of a 'general description' (=algemene beschrijving) for this.
So do not mention all tasks but try to summarise the content shortly in a few words.

#### Slide 16 -Slide

Homework time
Now make 32, 33, 34 and 35 in your Notebook, as usual:
- correct with Solutionsbook