5­4 Elimination using Multiplication.notebook
Check HW Answers: p. 269 #13­27
13. (­5, 4)
14. (­2, 3)
15. (2, ­2)
16. (1, ­1)
17. (4.5, 2)
18. (2, ­1.5)
19. 36, 12
20. 32, 19
21. 6, 0
22. ­5, 9
23. adult: $16; student: $9
24. 15.6 ft
25. y = .0022x + 1.28
26. y = .0116x + 1.05
27. (24.5, 1.33) In 2024, the populations will be the same, 1.33 billion.
December 21, 2016
5­4 Elimination using Multiplication.notebook
December 21, 2016
5­4 Elimination Using Multiplication
Ex 1: Multiplying one equation to eliminate
a.
2x + y = 23
b.
3x + 2y = 37
6x ­ 2y = 10
3x ­ 7y = ­19
5­4 Elimination using Multiplication.notebook
December 21, 2016
Ex 2: Multiply both equations to eliminate
a.
4x + 3y = 8
3x ­ 5y = ­23
b.
5x ­ 3y = 6
2x ­ 5y = 10