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1).
a(1,-5) b(-2,4)
x1=1, x2=-2, y1=-5, y2=4
m=(4-(-5))/(-2-1)=(4+5)/-3=9/-3=-3
2). p(-3,2) q(-6,-4)
x1=-3, x2=-6, y1=2, y2=-4)
m=(-4-2)/(-6-(-3))=-6/(-6+3)=-6/-3=2
y - 1 = -3x - 15
y - 1 = -3x - 14
y = 3x + y + 14 = 0
2. y - (-3) = -2 (x+2)
y - (-3) = -2x -4
y = -2x -1
= 2x + y + 1 = 0