1) \( x^{2}=75 \)

Find the equation of the line with slope \( \frac{2}{5} \) and \( y \)-intercept \( (0,-4) \). (Write the equation in standard form.)

10. \( 2\left(p^{t}\right)^{s} \) 11. \( \frac{1}{\left(\frac{1}{a}\right)^{-1}} \) 12. \( \frac{k^{0}}{k^{-1}} \) 13. \( \frac{-2}{-2^{-a}} \)

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

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

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 \( y=m x+b \).