P lies below the line if ax1 + by1 + c ………..0
The lines are real and distinct if h^2…….. ab
The angle between two lines ax ^2 + 2hxy – by^2 = 0 is …………….
Three points P, Q, R are collinear if ∆ ………0
P lies above the line if ax1 + by1 + c………………0
Slope of the line bisecting I and III. A quadrant is ……………….
P (2, - 1) line …….. the line 3x + 7y + 15 = 0
Plane geometry
If a line intersects x – axis at (a, 0) then a is called ………..
Equation of y – axis is …………………….
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