Name:___________________________ Period:_______Date:_______________ Solving Systems of Equations Answers
Section I. Solve by graphing 1. ! = −2! + 8 ! = 2! − 4 !
3. ! = − ! ! + 4 2. 3! − 2! = −4 !
! = ! − 3 4. ! =
!
! = ! ! − 2 ! + 4! = 8 Section II. Solve by Substitution !!
!
+ 2 5. ! + 4! = −1 2! − ! = 7 3, −1 6. – ! + 2! = −16 4! + 3! = 9 6, −5 7. ! + 3! = 3 4! + 12! = −13 !" !"#$%&"'! Section III. Solve by Linear Combination 9. 4! + 3! = 5 −4! + 10! = 34 −1, 3 11. 2! + 3! = 5 3! + 2! = 10 4, −1 Section IV. Solve Using Any Method 13. ! + 3! = 3 2! + 3! = 0 −3, 2 8. 3! + 2! = −1 2! − 7! = −59 −5, 7 10. 3! − 4! = 10 4! + 2! = 6 2, −1 12. −3! + 5! = −6 6! − 10! = 12 !"#!"$%& !"#$%&"'! 14. 2! + 3! = 6 !
! = ! ! + 2 0, 2