Ncert Solutions For Class 8 Maths Ex 15.2

Ncert Solutions For Class 8 Maths Chapter 15 Ex 15.2

 

Q1) Mark the points on a graph sheet, given below are the coordinate of the points.

 (a) A (4, 0), B (4, 2), C (4, 6), D (4, 2.5)

 (b) P (1, 1), Q (2, 2), R (3, 3), S (4, 4)

(c) K (2, 3), L (5, 3), M (5, 5), N (2, 5)

 

Ans.)

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(a) A, B, C and D, these all points lie on a vertical line

(b) All the points P, Q, R and S also lie on a vertical line

These points do not lie on a straight line.

 

Q2) Construct a line which passes through (2, 3) and (3, 2). Find out the coordinates of the points at which this line meets the x-axis and y-axis.

 Ans.)

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The coordinates of the points at which this line meets the x – axis at (5, 0) and y -axis at  (0, 5).

 

Q3) Plot the coordinates of the vertices of each of these adjoining figures.

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Ans.

Vertices of figure OABC

O (0, 0), A (2, 0), B (2, 3) and C (0, 3)

Vertices of figure PQRS P (4, 3), Q (6, 1), R (6, 5) and S (4, 7)

Vertices of figure LMK L (7, 7), M (10, 8) and K (10, 5)

 

Q4) Mark True or False in the given Statements and correct the false statements.

(i) A line having x coordinate as 0 and y coordinate as a non-zero will lie only on y- axis

(ii) When a line is lying on the y-axis, then its y coordinate may be zero and x coordinate may be 5.

(iii) Origin have the coordinate as (0,0)

Ans.)

(i) True

(ii) False, it will lie on x – axis.

(iii) True