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Home > A2C > Chapter 7 > Lesson 7.3.4 > Problem 7-202

7-202.
  1. Represent each system of equations below with matrices. You do not have to solve the systems. Homework Help ✎

    1. p + 2q = 7
      3p + 4q = 11

    2. 4m − 5n = −2
      −3m + 4n = 9

    3. 4x − y + z = −5
      2x + 2y + 3z = 10
      5x − 2y + 6z = 1

    4. 7w − 3x + 2z = 41
      −2w + x − z = −13
      4w + y − 2z = 12
      2 − 3x = 1

See part (a).

See parts (a) and (c); rearranging the equations so the variables are in the same order helps.
Notice that there are four variables in total;filling in 0's for the missing variables is also helpful.