BetterGrades Precalculus · Unit 8 · Assessment

Unit 8 Investigation

A multistage representation and verification task.

investigation

5 concrete stages

A multistage representation and verification task.

Investigation rubric

  1. represent the situation
  2. perform valid mathematical work
  3. interpret the result
  4. verify with a second representation
Assessment

Complete every required response

Item 101

Solve the representation example, then name the feature of systems as intersections and models that it illustrates: Solve2x+y=7xy=22x+y=7 \qquad x-y=2

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Item 202

Solve the representation example, then name the feature of systems of inequalities and feasible regions that it illustrates: Line styley>2x+1y>2x+1

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Item 303

Correct this reasoning and identify the first unsafe assumption: A frequent error is multiplying corresponding entries instead of using dot products.

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Item 404

Correct this reasoning and identify the first unsafe assumption: A frequent error is losing the row-operation audit trail in arithmetic clutter.

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Item 505

Solve the representation example, then name the feature of determinants, singularity, and inverse matrices that it illustrates: det[[0,1],[1,0]][[0,1],[1,0]]

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