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2011 AMC 10B Question 24

AMC10 · 2011 AMC 10B

Question 24

A lattice point in an $xy$-coordinate system is any point $(x, y)$ where both $x$ and $y$ are integers. The graph of $y = mx +2$ passes through no lattice point with $0 < x \le 100$ for all $m$ such that $\frac{1}{2} < m < a.$ What is the maximum possible value of $a?$
  1. $\dfrac{51}{101} $
  2. $\dfrac{50}{99} $
  3. $\dfrac{51}{100} $
  4. $\dfrac{52}{101} $
  5. $\dfrac{13}{25} $