Percubaan SPM MatematiK Tambahan SBP 2017 - Sumber Pendidikan graf add math sbp 2
QUESTION 8
log 10 y
x
3
5
6
9
10
12
log 10 y
0.37
0.22
0.15
- 0.09
- 0.16
- 0.31
0.6
0.5
N1
(b)
Correct axes, uniform scale and
one point correctly plotted
K1
All points correctly plotted
K1
Line of best fit
N1
(c) log10 y log10 p xlog10q
P1
(i) Use log 10 p = y – intercept
K1
0.4
x
p = 3.98
N1
0.3
(ii) Use log 10q = gradient
q = 1.19
x
0.2
(iii) y = 3.31
K1
N1
N1
x
10
0.1
0
- 0.1
2
4
6
8
10
12
x
x
- 0.2
- 0.3
- 0.4
x
14
x
log 10 y
x
3
5
6
9
10
12
log 10 y
0.37
0.22
0.15
- 0.09
- 0.16
- 0.31
0.6
0.5
N1
(b)
Correct axes, uniform scale and
one point correctly plotted
K1
All points correctly plotted
K1
Line of best fit
N1
(c) log10 y log10 p xlog10q
P1
(i) Use log 10 p = y – intercept
K1
0.4
x
p = 3.98
N1
0.3
(ii) Use log 10q = gradient
q = 1.19
x
0.2
(iii) y = 3.31
K1
N1
N1
x
10
0.1
0
- 0.1
2
4
6
8
10
12
x
x
- 0.2
- 0.3
- 0.4
x
14
x