Q. 14.1( 13 Votes )

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Answer :

Given: line segment joining the points Q( - 5,4) and R( - 1,0), and also given the mid - point of the line segment i.e.,

To find: the value of ‘a’.

Explanation: As it is given P is the midpoint of line QR, so the coordinates of P are

x - coordinate,

Here x1 = - 5 and x2 = - 1, so the above equation becomes

2a = 3(- 6)

2a =-18

a =-9

Hence the value of a is-9.

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