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nicole10 Group Title

In order to solve a system of equation by substitution, you must always solve for y in one of the equations and then back-substitute. true or false

  • 2 years ago
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  1. yernpaul Group Title
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    true..

    • 2 years ago
  2. nicole10 Group Title
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    why cant you solve for x what is the difference

    • 2 years ago
  3. yernpaul Group Title
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    it depend on what type of unknown you use. like in your question, the unknown is in term of y.

    • 2 years ago
  4. nicole10 Group Title
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    thanks

    • 2 years ago
  5. Directrix Group Title
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    False. You could solve for x and back substitute. Or, what if your system of equations had no y-variable Such as: a + b = 7 5a - 7b = 10

    • 2 years ago
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