Algebra I : Semester II : Solving Systems

Sections:

Introduction  |   Section 1  |   Section 2  |   Section 3  |  Section 4  |  Section 5

Section Four

Part 1  |  Part 2  |  Part 3

Algebra 1 : Section 4: Solving Systems Scalar Multiplication of Matrices Suppose the Garrett and Bradley farms wish to double the 2004 production by 2008. How much would they plant of each crop? Farm 2004 2005   Corn Wheat Oats Corn Wheat Oats Garrett 1304 2050 1820 1838 1910 1630 Bradley 1256 1925 1750 2030 2005 1800 The simple answer would be to multiply each of the items in 2004 by two. You can show this with the following: The matrix for 2004 is . If you double this, you have: .   A Scalar Multiplication of a Matrix means to distribute the scalar times each element in the matrix. Example 1:  Scalar Multiplication Evaluate 3B if   Practice Given these matrices, match each with its evaluation in the Drag and Drop activity. Move your mouse over the expression to enlarge it.   Section Homework (10 points) Find the Section Homework link to submit it for a grade. You may take this only one time, so check your understanding of the material before completing your homework, and do your best. Now go on to the next section

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