NCERT Exemplar Solutions
Class 9 - Mathematics - CHAPTER 3: COORDINATE GEOMETRY
Exercise 3.4: Long Answer Questions

Question. 1

Points \(A(5,3)\), \(B(-2,3)\) and \(D(5,-4)\) are three vertices of a square \(ABCD\). Plot these points on a graph paper and hence find the coordinates of the vertex \(C\).

Answer:

\(C(-2,-4)\)

Question. 2

Write the coordinates of the vertices of a rectangle whose length and breadth are 5 and 3 units respectively, one vertex at the origin, the longer side lies on the x-axis and one of the vertices lies in the third quadrant.

Answer:

\((0,0)\), \((-5,0)\), \((0,-3)\)

Question. 3

Plot the points \(P(1,0)\), \(Q(4,0)\) and \(S(1,3)\). Find the coordinates of the point \(R\) such that \(PQRS\) is a square.

Answer:

\(R(4,3)\)

Question. 4

From the Fig. 3.8, answer the following:

(i) Write the points whose abscissa is 0.

(ii) Write the points whose ordinate is 0.

(iii) Write the points whose abscissa is \(-5\).

Answer:

(i) A, L and O

(ii) G, I and O

(iii) D and H

Question. 5

Plot the points \(A(1,-1)\) and \(B(4,5)\).

(i) Draw a line segment joining these points. Write the coordinates of a point on this line segment between the points A and B.

(ii) Extend this line segment and write the coordinates of a point on this line which lies outside the line segment AB.

Answer:

(i) \((2,1)\)

(ii) \((5,7)\)

NCERT Exemplar Solutions Class 9 – Mathematics – CHAPTER 3: COORDINATE GEOMETRY – Exercise 3.4: Long Answer Questions | Detailed Answers