1TH/vwo Ch11 REFRESH

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1TH/vwo Ch11 REFRESH
Ch 11 Calculating with variables is about:
     +        -        x       :
     powers:                          2 x 2 x 2 = 8
     and much more. Let's start with the REFRESH on p.172/173!
     Let's have a look at it in the next slide.
23=

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A few tasks will help you on your way!

Slide 5 - Diapositive

The exponent is ....
and the base is ....
63
A
6, 3
B
3, 6

Slide 6 - Quiz


72=
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A
7
B
7 x 7
C
7 x 2
D
49

Slide 7 - Quiz

answer:
72=49

Slide 8 - Diapositive

6a and 7 are
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A
not like terms
B
like terms

Slide 9 - Quiz

6a and 7 are certainly NOT LIKE TERMS
you cannot add them together
If we had 6a and 7a then you could add them:
6a + 7a = 13a

Slide 10 - Diapositive

-3a - 4 -5a + 2 =
A
-2a + 6
B
8a - 2
C
-8a + 2
D
-8a - 2

Slide 11 - Quiz

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The perimeter means in dutch:
..................

Slide 12 - Carte mentale

answer:
perimeter = omtrek
area = oppervlakte

Slide 13 - Diapositive

Try to find out:
the cost in euros per hour.
Give your answer in the next slide.
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A
2
B
1.5
C
all three answers are wrong
D
2.5

Slide 15 - Quiz

answer:
In 8 hours you pay 16 - 4 = 12 euros,
so per hour you pay 12 : 8 = 1.5 euros.

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Task: Make a FORMULA
 for the GREEN graph.
In the next slide show your
Formula! 
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My Formula:
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Slide 18 - Question ouverte

SOLUTION: Make a FORMULA
 for the GREEN graph.
Without a TABLE this time:
- the Start value on the vertical axis is 4
- in 2 horizontal steps the graph goed
   DOWN 2 steps, so in 1 horizontal step
   the graph goes down 0.5 steps.
So the FORMULA is:      y = -0.5 x + 4

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Homework time
Make the REFRESH Ch11 on p.172/173 in your Notebook.
Check your work with the famous Solutionsbook!

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