Answer :

Slope of the line joining the points (3,– 2)and (–1, a) is .


Slope of the line with end points as (x1,y1) and (x2,y2)


is .



Given .



2(a + 2) = –3(–4)


2a + 4 = 12


a + 2 = 6 (Divide by 2 on both the sides)


a = 6–2 = 4


a = 4

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