Diberi bahawa fungsi \( p \) dan \( q \) sebagai \( p: x \rightarrow 5 x \) dan \( q x \rightarrow \frac{2}{x-6}, x+a \), Given that the function \( p \) and \( q \) as \( p: x \rightarrow 5 x \) and \( q: x \rightarrow \frac{2}{x-6}, x \neq a \). (a) Nyatakan nila \( a \). State the value of \( a \). (b) Cand nilai bagi \( q(9) \). (c) Cari nilai bagi \( k \) jika \( p q(k)=-5 \) Find the value of \( k(9) \).

\( 1 \leftarrow \quad \begin{array}{l}\text { Determine whether the ordered pair }(3,4) \text { is a solution of the system. } \\ \begin{array}{l}x+y=7 \\ x-y=-1\end{array}\end{array} \)

\( 8 x y \) is a monomial expression. Is the statement true or fause?

The cost price of a pen is Rs \( (3 x+5) \) and is selling price is \( \operatorname{Rs}(4 x+3) \) Write the formulato find protit.

\( 1 \leftarrow \quad \begin{array}{r}\text { Solve the system of equations by the substitution method. } \\ \begin{aligned} x+y & =-2 \\ y & =-2 x\end{aligned}\end{array} \)

What should be, subtracted from \( 8 x-3 y+4 \) to get \( 3 x-2 y+4 \).