Class 9 Maths Unit 8: Geometry of Straight Lines
Free MCQ practice for this FBISE unit. Three tests, each with 1 minute per question, automatic checking and an explanation after every answer.
For 9th class Federal Board (FBISE) students: Maths Chapter 8, Geometry of Straight Lines, online MCQ test.
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Notes
Animated slidesShort animated slides that explain the unit one idea at a time, plus a printable PDF. Read these first, then practise.
Beginner Practice
15 questions · 15 minCore definitions and basic skills with clear, direct questions.
Advanced Practice
20 questions · 20 minTougher, conceptual questions with real-life contexts and 'why is this wrong?' items.
Exam Ready
25 questions · 25 minA mix of question styles and difficulty for final revision. Practice only, not an official paper.
Try a few questions
Open a question to see the options and the explained answer. Then take the full test to practise under time.
Sample question 1
The inclination of a line is the angle it makes with the:
- y-axis, measured anticlockwise
- negative x-axis, measured clockwise
- line y = x
- positive x-axis, measured anticlockwise
Answer: D. Inclination θ is measured from the positive direction of the x-axis in the anticlockwise direction.
Sample question 2
Which statement is correct for the line y = −2x + 5?
- The slope is −2 and the x-intercept is 5
- The slope is −2 and the y-intercept is 5
- The slope is 2 and the y-intercept is 5
- The slope is 5 and the y-intercept is −2
Answer: B. Comparing with y = mx + c gives m = −2 and c = 5.
Sample question 3
Find the angle from the line of slope 1/2 to the line of slope 3.
- 60°
- 45°
- 30°
- 90°
Answer: B. tan θ = (3 − 1/2)/(1 + 3/2) = (5/2)/(5/2) = 1, so θ = 45°.