10.17xy-3x4then \( (4 x+5 y)=(5 x-2 y) \) \( \begin{array}{llll}\text { A) } 25 / 7 & \text { B) } 25 & \text { C) } 32 / 7 & \text { D) } 32\end{array} \)

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 \( (a, b) \)

What is the equation of the line with slope -7 which goes through the poin \( (2,5) \) ? Give your answer in slope-intercept form \( y=m x+b \).

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

Find the equation of the line through \( (-9,-5) \) which is parallel to the line \( y=-7 x+6 \). 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 \( y=m x+b \).