1.the equation of the perpendicular bisector of the segment
1.the equation of the perpendicular bisector of the segment joining the points whose coordinates are (1.4)and (-2.3) is
2.if the graph of πx+根号2y+根号3=0 is perpendicular to the graph of ax+3y+2=0 ,the a=
2.if the graph of πx+根号2y+根号3=0 is perpendicular to the graph of ax+3y+2=0 ,the a=
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