**CBSE NCERT Solutions For Class 11 Maths Chapter 10: **This NCERT Class 11 Maths Chapter 10: **Straight Lines** says that coordinate geometry is a combination of algebra and geometry. A systematic study of geometry by the use of algebra was first carried out by celebrated French philosopher and mathematician Rene Descartes, in his book ‘La Geometry, published in 1637. This book introduced the notion of the equation of a curve and related analytical methods into the study of geometry. The resulting combination of analysis and geometry is referred now as analytical geometry.

Solving the NCERT Solutions For Class 11 Maths Chapter 10 will teach you coordinate geometry and properties of the simplest geometric figure- straight line. Despite its simplicity, the line is a vital concept of geometry and enters into our daily experiences in numerous interesting and useful ways. The main focus is on representing the line algebraically, for which slope is most essential. Solving the questions of NCERT Class 11 Maths Chapter 10 will further aid in clearing any confusion you might have on this topic. We get you completely solved NCERT Solutions for Class 11 Maths Chapter 10 by the top teachers at Embibe. You will also find links to Embibe’s study pages for the sub-topics associated with this chapter and links to practice free mock test online.

## NCERT Solutions For Class 11 Maths Chapter 10: Straight Lines

The topics and sub-topics of NCERT Class 11 Maths Chapter 10 Straight Lines will assist you in your CBSE Class 11 Maths Preparation. They will help you to prepare for your school exams. As the questions from this chapter are asked in various entrance exams like JEE Main and other state CET’s, students are advised to study this chapter and attempt all the questions provided in their NCERT Book. For any help regarding the solving the questions, you will find solution in PDF for all the questions of chapter Straight Lines asked in your NCERT book.

10.1 | Introduction |

10.2 | Slope of a Line |

10.2.1 | Slope of a Line when coordinates of any points on the line are given |

10.2.2 | Conditions for Parallelism and Perpendicularity of lines in terms of their slopes |

10.2.3 | Angle Between Two Lines |

10.2.4 | Collinearity of Three Points |

10.3 | Various Forms of the Equation of a Line |

10.3.1 | Horizontal and Vertical Lines |

10.3.2 | Point-slope Form |

10.3.3 | Two-point Form |

10.3.4 | Slope-intercept Form |

10.3.5 | Intercept-Form |

10.3.6 | Normal Form |

10.4 | General Equation of a Line |

10.4.1 | Different Forms of Ax+By+C=0 |

10.5 | Distance of a Point from a Line |

10.5.1 | Distance between Two Parallel Lines |

### NCERT Solutions For Class 11 Maths Chapter 10 PDF Download

Once you solve the NCERT Questions for Class 11 Maths Chapter 10: Straight Lines, you will know that every line in a plane contains infinitely many points on it. This relationship between line and points leads us to find the solution of the following problem:

How can we say that a given point lies on the given line?

We can answer it by saying that for a given line we should have a definite condition on the points lying on the line.

Suppose P (x,y) is an arbitrary point in the XY-plane and L is the given line. For the equation of L, we wish to construct a statement or condition for the point P that is true, when P is on L, otherwise false. Of course the statement is merely an algebraic equation involving the variables x and y.

According to the CBSE NCERT Class 11 Maths Chapter 10, sometimes a line is known to us with its slope and an intercept on one of the axes.

Apart from this, you will learn important terms such as distance formula, section formula and slope formula. Students will also know about various conditions of concurrency, the conditions of perpendicular lines, etc. from this Chapter- Straight Lines. Solve the question of your Class 11 Maths NCERT and download PDF Solutions for NCERT Class 11 Maths Chapter 10 from the link given below.

Here is the sample of the Solutions page for the Chapter: Straight Lines.

### NCERT Solutions For Class 11 Maths Chapter 10: Straight Lines

The slope of the horizontal line is zero and slope of vertical line is undefined. Two lines are parallel if and only if their slopes are equal. Two lines are perpendicular if and only if product of their slopes is -1. Three points A, B and C are collinear, if and only if the slope of AB=slope of BC. Equation of the horizontal line having distance from the x-axis is either y=a or y= -a. CBSE NCERT Class 11 Maths Chapter 10 Straight Lines also teaches that the equation of the vertical line having distance b from the y-axis is either x=b or x= -b. The point (x,y) lies on the line with slope m and through the fixed point (x_{0}, y_{0}), if and only if its coordinates satisfy the equation y-y_{0}=m(x-x_{0}).

NCERT Solutions for Class 11 Maths Chapter 9 | NCERT Solutions for Class 11 Maths Chapter 11 | NCERT Solutions for Class 11 Maths (All Chapter) |

### NCERT Solutions For Class 11 Maths Chapter 10: Important Questions

Here is a list of some important questions from the Chapter: Straight Lines. After finishing problems from the NCERT book, you can also refer to the set of questions given below.

1. Find the equation of the line which is at a perpendicular distance of 5 units from the origin and the angle made by the perpendicular with the positive x-axis is 30°. 2. Find the equation of the line perpendicular to the line x – 7y + 5 = 0 and having x-intercept 3 3. Find the equation of the line through (4,-5) and parallel to the line joining the points (3,7) & (-2,4) 4. Find the intercepts cut off by the line 2a – b + 16 = 0 5. Find the equation of straight line whose intercepts on the axes are thrice as long as those made by 2x +11y = 6 6. The perpendicular from the origin to the line y = mx + c meets it at the point (-1, 2). Find the values of m and c. 7. Find the image of the point (1,2) in the line x-3y+4 =0 8. Find the equations to the line parallel to the axes and passing through the point (-3, 5) |

This article on CBSE NCERT Solutions for Class 11 Maths Chapter 10 Straight Lines will be helpful to you in clearing your doubts regarding this topic. You should also solve the NCERT Solutions for Class 11 Maths Chapter 10 PDF to have the best preparation ahead. Also, solve previous year papers and take a sufficient amount of mock tests. Taking free **JEE Main Mock Test** on Embibe will help you if you further aim to take competitive exams. The tests on Embibe are specially formulated to help you gain confidence and work on your time-management skill.

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