If a line graph passes through $(1,4)$ and $(3,10)$, its slope is:

If a line graph passes through $(1,4)$ and $(3,10)$, its slope is:
  1. $2$
  2. $3$
  3. $4$
  4. $6$

Solution

Slope $= (10-4)/(3-1) = 6/2 = 3$.

Asked in: IMO

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