Teachoo Quiz

Maths Straight Lines Class 11 MCQ and Assertion Questions

Short Quiz · Class 11 · Maths · CBSE

Preparing for CBSE

Chapter 9 Class 11 Straight Lines | 5 questions | about 4 minutes

Practise Straight Lines Class 11 with Teachoo's Short Quiz (Class 11 · Maths · CBSE). Practise these questions in a free interactive quiz with answer feedback.

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Question 1 of 5
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Question 1 of 5
Assertion: A line of slope \(3\) makes an acute angle of \(45^\circ\) with a line of slope \(\dfrac12\).
Reason: Both the slopes are positive.
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Question 2 of 5
Assertion: The equation of the line through \((1,2)\) and parallel to \(3x-2y+5=0\) is \(3x-2y+1=0\).
Reason: Parallel lines written in general form have proportional coefficients of \(x\) and \(y\).
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Question 3 of 5
Assertion: The slope of the line joining \((2,-1)\) and \((6,7)\) is \(2\).
Reason: For points \((x_1,y_1)\) and \((x_2,y_2)\), the slope is \(\dfrac{y_2-y_1}{x_2-x_1}\), and here \(\dfrac{7-(-1)}{6-2}=2\).
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Question 4 of 5
Assertion (A): The lines \( x + y = 1 \), \( x - y = 1 \), and \( 2x = 2 \) are concurrent.

Reason (R): Three lines are said to be concurrent if they pass through a common point.
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Question 5 of 5
Assertion (A): The points \( (1, 5) \), \( (2, 3) \), and \( (-2, -11) \) are collinear.

Reason (R): Three points A, B, and C are collinear if and only if the slope of AB is equal to the slope of BC.
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