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Formula Sheet

Equation of a Line — Formula Sheet

ICSE · Class 10 · Mathematics

9 formulas from Equation of a Line (ICSE Class 10 Mathematics) on one page, grouped by topic. Part of the ICSE Class 10 Mathematics syllabus.

22 questions28 flashcards9 formulas & key relations5 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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9 Entries · 3 Sections

Formulas and Key Relations

2. Slope formulas

m = tan θ

m = (y2 - y1) / (x2 - x1)

3. Equations of lines

y - y1 = m(x - x1)

y - y1 = [(y2 - y1) / (x2 - x1)](x - x1)

y - y2 = [(y2 - y1) / (x2 - x1)](x - x2)

y = mx + c

x = x1

Key relations

If a line passes through P(x1,y1) and Q(x2,y2), then m = (y2-y1)/(x2-x1).

Since the ordinate of every point on the X-axis is zero, its equation is y = 0.

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Frequently Asked Questions

What are the important topics in Equation of a Line for ICSE Class 10 Mathematics?
Key topics in Equation of a Line include Inclination and Slope, Slope from Two Points, Intercepts and Special Lines, Equation Forms of a Line. Study these first, then practise questions on each for the ICSE Class 10 board exam.
How many formulas are in Equation of a Line?
This sheet lists 9 formulas from Equation of a Line, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Equation of a Line for the ICSE Class 10 board exam?
Learn the core ideas first, then work through the 22 practice questions on Equation of a Line. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

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

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All ICSE Class 10 Mathematics Formula Sheet

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