Mathematics

Mathematics

Problem

Arrange the points P(−2,1)P(-2,1), Q(−2,−4)Q(-2,-4), R(3,0)R(3,0) and S(3,−5)S(3,-5) first in ascending order of abscissa and, for equal abscissas, in ascending order of ordinate. Which option shows the correct order? a) P,  Q,  S,  RP,\;Q,\;S,\;R b) Q,  P,  R,  SQ,\;P,\;R,\;S c) Q,  P,  S,  RQ,\;P,\;S,\;R d) R,  S,  Q,  PR,\;S,\;Q,\;P

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