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Question
The equation 4x2 + 4xy + y2 = 0 represents two ______
Options
real and distinct lines
real and coincident lines
imaginary lines
perpendicular lines
Solution
real and coincident lines
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Choose correct alternatives:
If the equation 4x2 + hxy + y2 = 0 represents two coincident lines, then h = _______
If 2x + y = 0 is one of the line represented by 3x2 + kxy + 2y2 = 0 then k = ______
P is a point on the line joining the points A(0, 5, −2) and B(3, −1, 2). If the x-coordinate of P is 6, then its z-coordinate is ______.
