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Solve by Cramer's rule: ( 5x + 3y = 7 -x + 2y = 9. 3 = 5(2) – (-1)(3) = 10 + 3 = 13 2 D = -1 3 =7.2 - 9.3 = 14 – 27 = -13 2 7 Dr 9. Dy 7 5(9) - (-1)(7) = 45 + 7 = 52 9 -1 D —1, у 52 4 Dx -13 X = - D 13 D 13 The solution is (-1, 4) and the solution set is {(-1,4)}.

Solve by Cramer's rule: ( 5x + 3y = 7 -x + 2y = 9. 3 = 5(2) – (-1)(3) = 10 + 3 = 13 2 D = -1 3 =7.2 - 9.3 = 14 – 27 = -13 2 7 Dr 9. Dy 7 5(9) - (-1)(7) = 45 + 7 = 52 9 -1 D —1, у 52 4 Dx -13 X = - D 13 D 13 The solution is (-1, 4) and the solution set is {(-1,4)}.

Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Solve by Cramer's rule: ( 5x + 3y = 7 -x + 2y = 9. 3 = 5(2) – (-1)(3) = 10 + 3 = 13 2 D = -1 3 =7.2 - 9.3 = 14 – 27 = -13 2 7 Dr 9. Dy 7 5(9) - (-1)(7) = 45 + 7 = 52 9 -1 D —1, у 52 4 Dx -13 X = - D 13 D 13 The solution is (-1, 4) and the solution set is {(-1,4)}.
Transcribed Image Text:Solve by Cramer's rule: ( 5x + 3y = 7 -x + 2y = 9. 3 = 5(2) – (-1)(3) = 10 + 3 = 13 2 D = -1 3 =7.2 - 9.3 = 14 – 27 = -13 2 7 Dr 9. Dy 7 5(9) - (-1)(7) = 45 + 7 = 52 9 -1 D —1, у 52 4 Dx -13 X = - D 13 D 13 The solution is (-1, 4) and the solution set is {(-1,4)}.
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