Chapter 7 Linear Formulas
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Lesduur is: 15 minOnderdelen in deze les
Slide 1 - Tekstslide
Slide 2 - Tekstslide
Reken uit:
4²+2
4²+2
A
10
B
12
C
18
D
36
Slide 3 - Quizvraag
A painter is asking € 25 per hour.
But also charges € 70 for brushes,
sanding paper etc.
What is the starting value?
But also charges € 70 for brushes,
sanding paper etc.
What is the starting value?
A
€ 25
B
€ 45
C
€ 70
D
€ 95
Slide 4 - Quizvraag
A painter is asking € 25 per hour.
But also charges € 70 for brushes,
sanding paper etc.
What do you need to pay after two hours?
But also charges € 70 for brushes,
sanding paper etc.
What do you need to pay after two hours?
A
€ 50
B
€ 120
C
€ 140
D
€ 190
Slide 5 - Quizvraag
A painter is asking € 25 per hour.
But also charges € 70 for brushes,
sanding paper etc.
What is the correct formula?
But also charges € 70 for brushes,
sanding paper etc.
What is the correct formula?
A
25 x time + 70 = amount
B
70 + time x 25 = amount
C
amount = 70 + 25 x time
D
amount = time x 25 + 70
Slide 6 - Quizvraag
Slide 7 - Tekstslide
___ + ________ x ___ = ________
time
price
2
1
0,5
3
Slide 8 - Sleepvraag
___ - ________ x ___ = ________
time
length
8
4
100
20
Slide 9 - Sleepvraag
___ + ________ x ___ = ________
time
distance
10
30
100
300
Slide 10 - Sleepvraag
A: ___ - time x ___ = amount
B: ___ + time x ___ = amount
60
360
10
20
15
30
Slide 11 - Sleepvraag
After how many days are the graphs at the same height?
Slide 12 - Open vraag
60 + time x 15 = amount
Calculate the amount when time is 20
Which is the correct way to write it down?
Calculate the amount when time is 20
Which is the correct way to write it down?
A
60 + 20 = 80
80 x 15 = 1200
B
20 x 15 = 300 + 60 = 360
C
60 + 20 x 15 =
60 + 300 = 360
D
360
Slide 13 - Quizvraag
Which of these five subjects do you find most difficult?
Make a formula from a description
Plot a graph for a formula
See from a formula if the graph is rising or falling
Make a formula for a linear graph
Check if you read off a point of intersection correctly
