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50-

You are given the following system of equations:

y =x2 ,

rx + sy = t

where r, s, and t are integers. For which of the following will there be more than one (x,y) solution, with real-number coordinates, for the system?

  • F. r+4st>0 

  • G. s−4rt>0

  • H. r2  −4st>0

  • J.  S2 – 4rt<0

  • K. s2 +4rt<0