6. On a homework problem, Carrie was asked to graph the inequality 2x – 3y > 9. Below is her answer. Did Carrie make a mistake on her homework problem? Which of the following best explains her mistake if there is one? у 10 Q N 2 х -10 -4 -2 2 AV 6. ca 10 V 2 G - 10 a) No mistake was made. b) Carrie should have graphed a solid line instead of a dotted line. c) Carrie should have shaded below the line because she divided by -3 when solving for y. d) Carrie should have graphed (0,9) as the y-intercept.