HKCEE - 2006 - Paper 2 -

Ans: A
Note that the two $x$-intercepts of the graph $y=f(x)

Ans: D
$\begin{array}{rcl}
3x^2 & = & 21x \\
x^2 &

Ans: A
$\begin{array}{rcl}
x^2 +2x – k & = &

Ans: $k49$
Since the equation has no real roots, then $\Delt

Ans: A
Let $x$ be the smaller one of two consecutive integers

Ans: D
According to the function $y=(x+1)^2-4$, we have

1. The

Ans: C
According to the given system of equations, we have

$\

Ans: (a) $b=2$, $3$ and $-5$ (b) $k-16$ (c) $y=-16$

1. Substitu

Ans: A
Note that the coordinates of the vertex of the graph of

Ans: B
Let $x$ and $y$ be the two numbers with $xy$. Hence, we h

Ans: (a) (i) $x=11$ (ii) $(11,23)$ (b) (i) $6$ (ii) $69$

1. 1. $x=1

Ans: D
Since the quadratic equation has equal roots, $\Delt

Ans: D
The sum of the squares of the two odd numbers means $x^2

Ans: C
Let $y=a(x-\alpha)(x-\beta)$ be the function of the

Ans: D
$\begin{array}{rcl}
x^2 + 6x +k & = & 3 \\
x^

Ans: A
A is true. Substitute $y=0$ into the equation of the gr