Which of the following straight lines passes through the origin?
A. x+y=4
B. x^2+y^2=-6
C. x+y=5
D. x=4y
Source: Arun Sharma's Quantitative Aptitude for CAT
Solution and explanation pls? I will give the OA after a few discussions
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Co-ordinate Geometry #5
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NikolayZ
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Hey!
If line passes through the origin, you have to plug x=0 (or y=0) into the line equation, and get y=0 also
(or x=0). origin is the point with measurements (0;0).
Among all given answer choices only D satisfies the condition of a problem.
Answer D.
If line passes through the origin, you have to plug x=0 (or y=0) into the line equation, and get y=0 also
(or x=0). origin is the point with measurements (0;0).
Among all given answer choices only D satisfies the condition of a problem.
Answer D.
