KERTAS 1

1 2 3 4 5 6 7 8 9 10B C B B A D A C D B11 12 13 14 15 16 17 18 19 20C A D C D A B B B C

BAHAGIAN 2

(a)

x −7 −6.5 −6 −5.5 −5 −4 −3 −2.5 −2

y −3.6 −3.8 −4.2 −4.5 −5 −6.3 −8.3 −10 −12.5

(b)

(c)(i) y = −6.5    (ii) x = −2.3

(d) −3x2 − 18x = 25    −3x − 18 =     y = −3x − 18    x = −3.8, −2.2

Rajah 2 menunjukkan graf bagi y = 1 − 2x2 + 7x.Diagram 2 shows the graph of y = 1 − 2x2 + 7x.