Parallel and Perpendicular Lines matching exercise

Question

1) What is the slope of a line perpendicular to x - 3y = 9? A) m = -2 2) What is the slope of a line parallel to 4x + y = -1? B) m = -4 3) What is the slope of a line parallel to 4x + 2y = 5? C) m = -5 4) What is the slope of a line perpendicular to x - 5y = -10? D) m = -3 5) What is the slope of a line parallel to 10x - 5y = 8? E) m = 2

Answer 1

starte line...x-3y=9 become 3y=x-9, or y=(x/3)-3... slope=(1/3)... perpendikular line hav slope=-3