The equations kx + y - Quantitative Aptitude - Equation
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CAT 2020 – The CAT QA section has grown increasingly difficult since 2015. In order to tackle the tougher CAT Level QA questions for the CAT Exam, it is important to understand the basics of CAT. To obtain a great CAT score, make use of MBAP Free Study material with detailed solutions and video explanations. Check out MBAP free Mock test to take these questions in a test format for free.
The question below is from previous year CAT question from CAT 2020 exam comes from CAT Equation : Let k be a constant. The equations kx + y.
Find out by answering this question which tests an aspirant’s Quantitative Ability Skills.
You may also find remaining question solution of CAT 2020, Slot 3 by searching the question in the search bar.
CAT 2020 - Slot 3 - Quantitative Aptitude - Equation - Question 15 - Let k be a constant. The equations kx + y
Q. 15: Let k be a constant. The equations kx + y = 3 and 4x + ky = 4 have a unique solution if and only if
1. |k| = 2
2. k ≠ 2
3. |k| ≠ 2
4. k = 2
15. C.
Two generic equations, a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0, will have a unique solution if and only if, .
We have the equations kx + y = 3 and 4x + ky = 4,
For them to have unique solutions, they must satisfy the condition
k2 ≠ 4
k ≠ ±2
|k| ≠ 2
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