find the equation of line passing through the point of intersection of lines x +3y+2=0 and x-2y-4=0 and parpendicular to the line 2y+5x-9=0
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The line perpendicular to rx+sy+t=0 through a given point (x₀,y₀) is sx-ry+ry₀-sx₀=0.
The intersection of ax+by+c=0 and dx+ey+f=0 is ((b×f-c×e)/(a×e-b×d), (c×d-a×f)/(a×e-b×d)) where the lines are not parallel.
The equation of line passing through the point of intersection of the lines ax+by+c=0 and dx+ey+f=0, and perpendicular to the line rx+sy+t=0 is:
sx - ry + (r(c×d-a×f) - s(b×f-c×e))/(a×e-b×d) = 0
The equation of line passing through the point of intersection of the lines x+3y-1=0 and x-2y+4=0, and perpendicular to the line 3x+2y=0 is 2x - 3y + (3(-1×1 - 1×4) - 2(3×4 - -1×-2))/(1×-2 - 3×1) = 0 which simplifies to 2x - 3y + 7 = 0.
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