CBSE Class 9 Maths Linear Equations in two Variables MCQs Set C. Multiple choice questions have become an integral part of the CBSE examination system. Almost all exams have a section for MCQs. Students are advised to refer to the attached MCQ database and practise them regularly. This will help them to identify their weak areas and will help them to score better in examination. Parents should download and give the MCQs to their children for practice.

**1. Which of the following is not a linear equation in two variables?**

(a) ax + by = c (b) ax^{2} + by = c (c) 2x + 3y = 5 (d) 3x + 2y = 6

**2. The graph of ax + by + c = 0 is**

(a) a straight line parallel to x–axis (b) a straight line parallel to y–axis

(c) a general straight line (d) a line in the 2^{nd} and 3^{rd} quadant

**3. The solution of a linear equation in two variables is**

(a) a number which satisfies the given equation

(b) an ordered pair which satisfies the given equation

(c) an ordered pair, whose respective values when substituted for x and y in the given equation, satisfies it

(d) none of these

**4. One of the solution of a linear equation in two variables is**

(a) (3, 2) (b) (3, –2) (c) (2, 3) (d) (–2, –3)

**5. The ordered pair (m, n) satisfies the equation ax + by + c = 0 if**

(a) am + bn = 0 (b) c = 0 (c) am + bn + c = 0 (d) am + bn – c = 0

**6. The equation of x – axis is**

(a) a = 0 (b) y = 0 (c) x = 0 (d) y = k

**7. From the graph of a line, we can find the coordinates of**

(a) only two point lying on the line

(b) only two points only lying on the line.

(c) only finite number of points lying on the line.

(d) only infinite number of points lying on the line.

**8. A linear equation in two variables has**

(a) no solution (b) only one solution (c) only two solutions (d) infinitely many solutions

**9. An equation of the form ax + by + c = 0 represents a linear equation in two variables, if**

(a) a = 0, b ≠ 0 (b) a ≠ 0, b = 0 (c) a = 0, b = 0 (d) a = 0, b ≠ 0

**10. The graph of the linear equation in two variables y = mx is**

(a) a line parallel to x – axis (b) a line parallel to y – axis (c) a line passing through the origin (d) not a straight line

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