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GRE: Math4

GRE Math4 Flashcards - Most Studied - #7,9,10,12 I deleted ones that didn't make sense
smith-gives
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  • Slope
    y₂-y₁/x₂-x₁
  • For any number x
    Can be negative, zero, or positive
  • X is the opposite of
    -X
  • 3 is the opposite of
    -3
  • The only number that is equal to its opposite
    ∅ ∅=∅
  • Product of any number and ∅ is
    ∅
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