Graphically, the pair of equations 7x – y = 5; 21x – 3y = 10 represents two lines which are (a) intersecting at one point (b) parallel (c) intersecting at two points (d) coincident
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b)Graphically, the pair of equations 7x - y = 5 and 21x - 3y = 10 represent two lines which are parallel lines
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