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Check the following relations R and S fo...

Check the following relations `R` and `S` for reflexivity, symmetry and transitivity: `a R b` iff `b` is divisible by `a ,\ a ,\ b in N` (ii) `l_1` `S\ l_2` iff `l_1_|_l_2` , where `l_1` and `l_2` are straight lines in a plane.

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The relation R is reflexive, since a is divisible by a, R is not symmetric because b is divisible by a but a is not divisible by b. i.e., aRb `cancelimplies` bRa
Again, R is transitive, since b is divisible by a and c is divisible by b, then always c is divisible by a.
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