\( \left\lvert\, \begin{array}{l}-5 x+4 y=-3 \\ \text { Direct variation } \\ \text { Constant of variation: } \quad k=\square \\ \text { Inverse variation } \\ \text { Constant of variation: } \quad k=\square \\ \text { Neither }\end{array}\right. \)

2.3 Express \( \frac{1}{\sqrt{2}+1} \) in its simpl

November 2018 ZIMSEC Paper 1 Solve the following simultancous equations: \[ \begin{array}{l}e^{2 x+y}=1 \\ 4 x-3 y=10\end{array} \]

Question 8 ( 3 marks) What is the equation of the line that passes through the points \( (1,6) \) and \( (3,2) \) ? \( y=\square x+\square \)

2imalify \( \frac{x^{2}-y^{2}}{x^{2} x y} \) \( \frac{y+2 x-3 y}{3 x-2 y}=4 \), evaluate \( 2 x y \) If \( z=\sqrt{x^{2}-y^{2}} \), express \( x \) interm 9 \( y \) and 2

\( \therefore \sqrt { x } ( x ^ { \frac { 5 } { 2 } } + x ^ { 2 } + 5 ) \)