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Solution :

Let the given points be A(-4, 5) and B (2,-3) <br> `AB = sqrt((2-(-4))^(2) + (-3 - 5)^(2))` <br> `=sqrt(36 + 64) = 10` units . **What is coordinate geometry ? Why it is so useful for us ?**

**Cartesian co-ordinate axis and quadrants**

**Cartesian Co-ordinate of a point**

**Convention of Signs**

**In Which quadrant do the following points lie ?
(i) (4,3)
(ii) (-3,-2)
(iii) (-2,1)
(iv) (2,-5)**

**Plotting of Points on Cartesian co-ordinate system**

**Find the following points on graph paper : (i) (3,4) (ii) (-2,3) (iii) ( -4,-3) (iv) (3,-3)**

**Write down the co-ordinates of the following points A;B;C and D marked on the graph paper.**