## RD Sharma Solutions for Class 11 Maths Chapter 23 - Free PDF Download

## FAQs on RD Sharma Class 11 Maths Solutions Chapter 23 - The Straight Lines

**1. What's a Straight Line?**

In geometry, to describe straight objects with negligible width and depth, the notion of line or straight line was introduced by ancient Math Chapters mathematicians. Lines are an idealization of certain objects that are often represented or referred to with a single letter in terms of two points. Straight lines are figures in one dimension that have no width. These can be described as a combination of endless points which are joined on both sides of a point. These lines do not have any curves.

**2. What do they name two straight lines?**

Parallel lines in geometry are lines in a plane that do not meet; that is, it is said that two straight lines in a plane that do not converge at some point are parallel. Curves that do not pass each other or converge and retain a defined minimum distance are said to be parallel, colloquially. Two straight lines present in a plane that do not intersect with each other at any point are known as parallel lines and are represented by a symbol ||.

**3. What is a line equation like?**

A line's equation is usually written as y = mx + b where the slope is m and the y-intercept is b. If you know two points from which a line moves, this page will teach you how to find the line equation. If an equation is present in the form of y = mx + c, then it is very easy for the students to interpret the x-intercept and the y-intercept from the data provided in the question. Questions from the line equation are always asked in the question paper.

**4. How can I solve Question 6 of RD Sharma Class 11 Chapter 23?**

In question 6 of RD Sharma Class 11 Chapter 23, that is, the straight lines are a very simple question and are completely formula-based. The students are provided with points through which a line passes and they have to find the value of a missing point on the y-axis if both the lines are parallel to each other. The two points for the first line are given as (3,y) and (2,7). The points for the second line are (-1,4) and (0,6). Now calculate slope by using formula \[\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\] for both the lines. Now, subtract both the slopes from each other to calculate the value of y.

**5. How can I interpret the results of Question 8 RD Sharma Class 11 Chapter 23, The Straight Lines?**

Question 8 RD Sharma Class 11 Chapter 23, that is, the straight lines is a conceptually based question that requires the student to know the properties of parallel lines and intersecting lines. The question provides the students with four points that correspond to two lines and the students are asked if the lines are parallel or intersecting. Thus, in the given question students should calculate the slope of the two lines using the formula slope =\[ \frac{y_{2}-y_{1}}{x_{2}-x_{1}}\]. If the slope of both the lines is equal then that means the lines are parallel to each other.