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(5, -3)
y-y1= x-x1
___ ___
y2-y1 = x2-x1
y-1= x+2
__ ____
-3-1= 5+2
7y-7= -4x-8
4x+7y+1= 0
Maaf kalau tidak jelas. Jawabannya 4x+7y+1=0