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Compare the graphs of lines A, B, and C at right. 

  1. Which line has the greatest slope? Justify your answer.

    Which line increases most sharply?

    Line A

  1. What is the -value of line A when ?

    Locate line A and  on the graph.

    What is the -coordinate of the point on the graph?

  1. Compare the slopes of lines B and C.

    The lines are parallel. Parallel lines have the same change in for the same change in .

Coordinate plane with 3 increasing lines, passing through points, as follows: A: the origin and the point (2, comma 5). B: the points (0, comma 6), and (2, comma 7). C: the origin and the point (2, comma 1).