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Question

Consider the following three statements:

Statement- 1: A linear equation in two variables has only two solutions.

Statement - 2 : The graph of every linear equation in two variables is a straight line.

Statement- 3: x=0 is the equation of x-axis.

Which of the following is correct?


A

Statement1is true and Statements 2 and 3 are false.

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B

Statement 2 is true and Statements 1 and 3 are false.

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C

Statement 3 is true and Statements 1 and 2 are false.

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D

All the Statements are true.

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Solution

The correct option is B

Statement 2 is true and Statements 1 and 3 are false.


Explanation for the correct option:

Step 1: Analysing the statement - 1

Statement -1: A linear equation in two variables has only two solutions.

Every point of the line be the solution of their corresponding linear equation so it has infinitely many solutions.

Hence Statement -1 is false.

Step 2: Analysing the statement - 2

Statement -2: The graph of every linear equation in two variables is a straight line

Every linear equation in two variable is represented as y=mx+c, where c is constant and m is slope of the line.

We know that y=mx+crepresents straight line.

Hence statement -2 is true.

Step 3: Analysing the statement - 3

Statement -3: x=0 is the equation of x-axis.

We know that, the graph of x=a is a straight line parallel to y axis.

Therefore, the graph of equation x=0 will be y axis itself.

Therefore statement -3 is false.

Hence we conclude the correct answer is option B.


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