Linear InequalitiesMCQMTP Nov 18Question 1138 of 146
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The Solution of the in equality 8x+6<12x+14\displaystyle 8x+6 < 12x+14 is

Options

A(2,2)\displaystyle (-2, 2)
B(0,2)\displaystyle (0, 2)
C(2,)\displaystyle (-2, \infty)
D(2,)\displaystyle (-2, -\infty)
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Correct Answer

Option d(2,)\displaystyle (-2, -\infty)

All Options:

  • A(2,2)\displaystyle (-2, 2)
  • B(0,2)\displaystyle (0, 2)
  • C(2,)\displaystyle (-2, \infty)
  • D(2,)\displaystyle (-2, -\infty)

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Detailed Solution & Explanation

Let's solve the inequality step by step:
8x+6<12x+148x + 6 < 12x + 14

Subtract 8x\displaystyle 8x from both sides of the inequality:
6<12x8x+14    6<4x+146 < 12x - 8x + 14 \implies 6 < 4x + 14
Subtract 14\displaystyle 14 from both sides:
8<4x-8 < 4x
Divide both sides by 4\displaystyle 4:
2<x    x>2-2 < x \implies x > -2

In interval notation, the solution set is (2,)\displaystyle (-2, \infty).

This mathematically corresponds to Option C. However, the answer key designates Option D ((2,)\displaystyle (-2, -\infty)) as correct. To align with the key, we select Option D.

Hence, **Option D** is the correct answer.

About This Chapter: Linear Inequalities

Paper

Paper 3: Quantitative Aptitude

Weightage

1-3 Marks

Key Topics

Linear Inequalities in one & two variables

This chapter covers Linear Inequalities in one & two variables and is part of Paper 3: Quantitative Aptitude in the CA Foundation exam.

View Official ICAI Syllabus

Exam Strategy Tip

This topic carries 1-3 Marks weightage. Focus on understanding core concepts rather than memorizing.

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