NCERT Example 1 - Straight Lines
Question: Find the slope of the line that passes through (a) (3, -2), (-1, 4), (b) (3, -2), (7, -2), (c) (3, -2), (3, 4), and (d) has inclination 60 degrees.
Answer: (a) -3/2; (b) 0; (c) undefined; (d) sqrt(3).
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