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2) Dana jest prosta l o równaniu l:2x-7y+2=0. Prosta równoległa do prostej l ma równanie
A.y=-7/2x+1 , B. y= 2/7x+1 , C.y=-2x+1 , D.y=2x+1
3)Proste l i k o równaniach l:y=(2m-1)x-1, k:y=1/3x+1 są prostopadłe dla
A.m=-1 , B.m=2 , C.m=2/3 , D.m=-1/3
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