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# Class 9 RD SHARMA Solutions Maths Chapter 8 - Co-ordinate Geometry

## Co-ordinate Geometry Exercise Ex. 8.1

### Solution 1

The graph of the given points are:

### Solution 2

The coordinates of the given points are A(3,1), B(6,0), C(0,6), D(-3,0), E(-4,3), F(-2,-4), G(0,-5), H(3,-6), P(7,-3) and Q(7,6)

## Co-ordinate Geometry Exercise 8.7

### Solution 1

The point of intersection of co-ordinate axes i.e. X-axis and Y-axis is (0, 0), which is called origin.

Hence, correct option is (d).

### Solution 4

Abscissa is = 2 (positive intercept on X-axis)

and ordinate = -5 (negative intercept on Y-axis)

so X-value is positive and Y-value is negative, i.e. Fourth Quadrant.

Hence, correct option is (d).

### Solution 5

In (-4, 0) and (7, 0 ),

measure of ordinate = 0

That means, intercept on Y-axis = 0

So, points lies on X-axis.

Hence, correct option is (a).

### Solution 6

On X- axis, all points have their  Y- intercept = 0

So their ordinate = 0

Hence, correct option is (a).

### Solution 7

Every point on Y-axis have X-intercept = 0

Thus, their abscissa = 0

Hence, correct option is (a).

### Solution 8

Abscissa = Intercept on X-axis

If intercept on X-axis is positive, means First and Fourth quadrant.

Hence, correct option is (d).

### Solution 10

Let two points be (a, b) and (a, c).

If abscissa is same = a

and ordinate is different then all such points will lie on a line parallel to Y- axis because value of X-intercept

i.e. abscissa is fixed.

Hence, correct option is (c).