    Sentence | The line |mathiLiimathl has equation  Imathldx+2y-3-Olimathl. A perpendicular line passes  though the point Imathl2, Sil/mathl. What is the Imathlyl/  mathl-intercept of this perpendicular line?    ‘Sentence 2:| have 2 points that are in the same line. Why  's tt crucial not to be in the same line?