# CARI

Directions: Read pages 137-148 in your math textbook. Please record how long it took to complete the selection. Record the time in the space provided in the respond sheet. Close your book and answer the first question. Open the textbook and answer the remaining questions.

Students Respond Form

I.

II.

III.

IV.

____________sec.

Directions: Close your book and answer the following question: In your own words, what was the section about? Use previous knowledge, examples, and specific information to answer the question. Minimum 2 paragraphs

1.

A system of two linear equations in two variables x and y consists of two equations of the following form.

π΄π₯ + π΅π¦ = πΆ

π·π₯ + πΈπ¦ = πΉ a.

True b. False

2.

A system has no solution if the graph of a system is a single line a.

True b. False

Directions: Answers to these questions are not directly stated in the text. Level of Comprehension to use is inferential.

1.

How can you use the graph of a linear system to decide how many solutions the system has?

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2.

When solving a linear system algebraically, how do you know when there is no solution?

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Directions: Answers to these questions are not directly stated in the text. Level of Comprehension to use is applied (going beyond the material).

1.

When not stated in the directions, which method will be the best to use when solving three linear equations? Why?

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2.

Why in a linear equation in three variables, ax +by + cz = d,

a, b, c

, cannot all be zeros?

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