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McGraw Hill Glencoe Algebra 2, 2012

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McGraw Hill Glencoe Algebra 2, 2012 View details

1. Graphing Quadratic Functions

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Exercise 73 Page 227

Use the formula for finding the determinant of a 2* 2 matrix, det(A)=a_(11)a_(22)-a_(21)a_(12).

45

Practice makes perfect

The determinant of a matrix is found by subtracting the products of the diagonals. To evaluate the determinant of a 2* 2 matrix, we will use the appropriate formula. | cc a & b c & d | = ad-bcWe can substitute the values from the given matrix into this formula. | cc 6 & - 3 - 1 & 8 | = 6(8)-(- 3)(- 1) Finally, we will simplify the numeric expression.

6(8)-(- 3)(- 1)

Multiply

48-(- 3)(- 1)

MultNegNegTwoPar

(- a)(- b)=a* b

48-3

Subtract term

45

Subchapter links

Check Your Understanding p.224

Practice and Problem Solving p.224-226

H.O.T. Problems p.226

Standardized Test Practice p.227

Spiral Review p.227

Skills Review p.227