Equation of the line Joining (-4,6) and (2, -6) would be y-6= (-6-6)/2+4 (x+4)

That is y-6= -2(x+4)

Equation of line joining (-4,6) and (8,10) would be y-6 = (10-6)/(8+4) (x+4)

That is y-6=1/3 (x+4)

Equation of line joining (2,-6) and (8,10) would be y+6 = (10+6)/(8-2) (x-2)

That is y+6= 8/3 (x-2)

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