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Number of solutions of the equation x-4=0 are?(a) Infinite(b) Three(c) Two(d) OneI had been asked this question in an interview for internship.My doubt stems from Equations of Lines Parallel to x-axis and y-axis in section Linear Equations in Two Variables of Mathematics – Class 9

Answer»

The correct answer is (d) ONE

To explain: Since the GIVEN equation x-4=0 is only in one variable, i.e. x, it has only one SOLUTION and that is x=4 and it is INDEPENDENT of value of y.



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