Inequality 1: Ax + By = ≥ > < ≤ C
   On Off
  Shade Color:
  A:
  B:
  C:
  -5x + 5y = 2.5

Inequality 2: Ax + By = ≥ > < ≤ C
   On Off
  Shade Color:
  A:
  B:
  C:
  y = x -1