answer in y = mx + b or Ax+By = C form, or, in x = a or y = b form, when applicable.
7. Through (-3, 5); Slope = -2.
8. Through (5,-2); Slope = 0
9. Slope = 2/a ; y-intercept (0,-4)
10. Undefined slope; Through (5,2)
11. Parallel to 2x + 4y= 9; Through (6, 1)