2. \( x^{2}-5 x+6=0 \)

Simplify the expression: \( (x^{1/4}y^{1/2})^{8} \)

Find the value of \( x \) \( 3 x-2 y=19 \) \( 4 x-8 y=4 \)

Find the equation of the line through \( (-1,-2) \) which is perpendicular to line \( y=\frac{x}{2}-9 \). Give your answer in the form \( y=m x+b \).

Find the equation of the line through the points \( (3,4) \) and \( (-2,9) \). Enter your answer in slope-intercept form \( y=m x+b \).

Solve the following system of equations. \[ \begin{array}{r}y=-3 x+9 \\ -5 x+6 y=8\end{array} \] Give your answer as an ordered pair \( (a, b) \)