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Important Questions

Equation of a Line

ICSE · Class 10 · Mathematics

Most important questions from Equation of a Line for ICSE Class 10 Mathematics board exam 2026. MCQs, short answer, and long answer questions with marks.

30 questions22 flashcards5 concepts

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A diagram defining the inclination of a straight line as the angle it makes with the positive direction of the x-axis, measured anti-clockwise.
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30 Questions·
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Sample Questions

1multiple correct

Which of the following represent equations of lines parallel to the x-axis? (Select all correct answers)

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y = 5, y = -2, y = 0

Lines parallel to x-axis have the form y = k (constant). They have zero slope and run horizontally. Lines of form x = k are parallel to y-axis.

2multiple correct

Which conditions must be satisfied for two lines to be perpendicular? (Select all correct)

Show answer

Product of slopes = -1, Slopes are negative reciprocals

For perpendicular lines: m₁ × m₂ = -1, which means slopes are negative reciprocals of each other (m₂ = -1/m₁).

3multiple choice

Convert the equation 3x - 4y + 8 = 0 to slope-intercept form.

Show answer

y = (3/4)x + 2

Rearrange to y = mx + c form: 3x - 4y + 8 = 0 → -4y = -3x - 8 → 4y = 3x + 8 → y = (3/4)x + 2.

4multiple choice

Find the equation of line passing through points (0, 2) and (3, 8).

Show answer

y = 2x + 2

Slope = (8-2)/(3-0) = 6/3 = 2. Since line passes through (0,2), y-intercept = 2. Therefore, y = 2x + 2.

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Frequently Asked Questions

What are the important topics in Equation of a Line for ICSE Class 10 Mathematics?
Equation of a Line covers several key topics that are frequently asked in ICSE Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Equation of a Line — ICSE Class 10 Mathematics?
Understand the core concepts first, then work through the 30 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Equation of a Line?
There are 30 practice questions available for Equation of a Line. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All 22 chapters — ICSE Class 10 Mathematics Important Questions

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