Co-Ordinate Geometry Introduction, Cartesian System, Graph Reading

Number System- Introduction

The co-ordinates of the centre of mass of the system as shown in figure are

Let vecr be position vector of variable point in cartesian plane OXY such that vecr*(vecr+6hatj)=7 cuts the co-ordinate axes at four distinct points, then the area of the quadrilateral formed by joining these points is :

Let vecr be position vector of variable point in cartesian plane OXY such that vecr*(vecr+6hatj)=7 cuts the co-ordinate axes at four distinct points, then the area of the quadrilateral formed by joining these points is :

Co-ordination number for sodium metal is

A (-2,2),B(8,2) and C(4,-4) are the vertices of a parallelogram ABCD. By plotting the given points on a graph paper, find the co-ordinates of the fourth vertex D. Also from the same graph, state the co-ordinates of the mid points of the sides AB and CD.

The co-ordinates of two vertices of Delta ABC are A(-5,7,3) and B(7,-6,-1). The co-ordinates of its centroid are (1,1,1). Find the co-ordinates of vertex C.

The position co-ordinates of the centre of mass of a system of three particles of equal masses which are placed on the verctices of an equilateral triangle of a side a are shown. Locate centre mass?

Draw the graph of 2x - 3y + 6 = 0. Hence, find the co-ordinates of points where the graph drawn meets the co-ordinate axes.

Draw the graph for each equation given below: 1/2x+2/3y=5 In each case find the co-ordinate of the points where the graph (line) drawn meets the co-ordinate axes.