Page 210 - SET 1 Koleksi Soalan dan Skema Jawapan SPM KBSM

3 2x y 40 or 3x 2y 65 P1

4x 2y 80 or equivalent K1
Note:
1. Accept any two different variable .
2. Attempt to equate the coefficient of one of the unknowns
award K1
OR
40 y
y 40 2 x or x or equivalent (K1)
2
Note:
Attempt to make one of the unknowns as the subject with two terms
on other side, award K1.
K1
x 15 or y 10 or equivalent
N1
x 15 N1
y 10
(x = mass of Wafiq and y = mass of Khalish)

5

4 (a)

or P1
or

(b)

80 120 2 80 2
sin or cos or K1
120 120

80
tan or equivalent
120 2 80 2
41.8 or N1

3