Skali 3B nemendabók, lausnir

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Skali 3B Nemendabók Lausnir © 2016 Menntamálastofnun 8550 4 KAFLI
b
12
11
10
9
8
7
6
5
4
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
f
g
(2, 0) (–1.33, 0)
–17 –16 –14 –12 –10 –8 –6 –4 –2 0 2 4 6 8 10 12 14 16 18 2021
90
80
70
60
50
40
30
20
10
0
–10
–20
–30
–40
–50
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–70
(4, 0)
–17 –16 –14 –12 –10 –8 –6 –4 –2 0 2 4 6 8 10 12 14 16 18 2021
h
c 1 (− 43 , 0)
2 (2, 0)
3 (4, 0)
Bættu þig!
4.54
a −1
b (0, −4)
c (−4, 0)
d
4.55
a (0, 2)
b (5, 0)
c 2
5
d
13
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8
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1
0
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4.56
a Upphafshæð spjótsins
b h(30) = 22,9. Hæðin er 22,9 m yfir vellinum
c
28
26
24
22
20
18
16
14
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2
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115
Fjarlægð frá
upphafspunkti
Hæð yfir vellinum í m
(50, 26.9)
f
(101.87, 0)
(30, 22.9)
d Kastið er um það bil 102 m
e 50 m út eftir vellinum frá upphafspunkti,
26,9 m yfir vellinum
4.57
a Botnpunktur: (0, 3)
b Topppunktur: (0, 3)
c Botnpunktur: (0, –3)
d Topppunktur: (0, –3)
13
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0
– 1
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a
–16 –14 –12 –10 –8 –6 –4 –2 2 4 6 8 10 12 14 16 18 20 22