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1986 AMC 12 Question 26

AMC12 · 1986 AMC 12

Question 26

It is desired to construct a right triangle in the coordinate plane so that its legs are parallel to the $x$ and $y$ axes and so that the medians to the midpoints of the legs lie on the lines $y=3x+1$ and $y=mx+2.$ The number of different constants $m$ for which such a triangle exists is
  1. $0$
  2. $1$
  3. $2$
  4. $3$
  5. more than $3$