SAT Prep

Category - Math

Line p has a positive slope and passes through the point (-2,4). Which of the following points may lie on the line p?
  1. (2,3)
  2. (-1,6)
  3. (3,-2)
  4. (4,-6)
  5. (0,0)
Explanation
Answer: B - Point (-4,6) may lie on the line p. Use the formula for the slope: (y_2-y_1)/(x_2-x_1 ).
A(-2,4),B(-1,6)
(y_2-y_1)/(x_2-x_1 )=(6-4)/(-1-(-2))=2/(-1+2)=2/1=2>0
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