Class 9 Mathematics · Chapter 5 · Test 1
Equations in One Variable
40 MCQs
40 questions · 35 min · 40 marks
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Sample questions
The first 5 of 40. Try each one, then tap to see the answer.
Question 1
The general form of a linear equation in one variable is:
- Aax² + bx + c = 0
- Bax + b = 0 where a ≠ 0
- Cax + by = c
- Dax + b > 0
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Answer: B
A linear equation in one variable has the form ax + b = 0 with a ≠ 0.
Question 2
In a linear equation the highest power of the variable is always:
- A0
- B2
- C3
- D1
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Answer: D
The highest power of the variable in a linear equation is 1.
Question 3
A linear equation in one variable has:
- Aexactly one solution
- Btwo solutions
- Cno solution always
- Dinfinitely many solutions
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Answer: A
A linear equation in one variable has only one solution.
Question 4
The last step in solving a linear equation is to:
- Aadd both sides
- Bremove the variable
- Ccheck the solution by substitution
- Dmultiply by zero
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Answer: C
The solution is substituted into the original equation to confirm that it is correct.
Question 5
Solve 3x = 12:
- Ax = 3
- Bx = 4
- Cx = 9
- Dx = 36
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Answer: B
Dividing both sides by 3 gives x = 4.
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