Are the following statements true of false. Justify your answer.
(i) The pair of equations 2x-y=4 and x/5+y/5=1 has a unique solution.
(II) The equations 3x+4y=6 and 9x+12y=15 represent a pair of coincident lines.
(III) The pair of equations 3x-5y=20 and 6x-10y+40=0 is inconsistent.
(iv) The pair of equations x+3y-2=0 and 3x+9y-6 is consistent.
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Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around. Liquid matter is made of more loosely packed particles. ... Gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume
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