5­5 Applying Systems of Linear Equations.notebook
December 22, 2016
5‑4 Homework: p.276‑277 #11‑23odd, 24‑28
23.
24. Let x = the cost of a batting token
let y = the cost of a miniature golf game
16x + 3y = 30
22x + 5y = 43
25. (1.5, 2); A batting token costs $1.50 and a game of miniature golf costs $2.00.
26. 486 mph ‑> save for after break
27. (4, 1)
28. Let x = the tens digit of the actual test score
let y = the ones digit of the actual test score
x + y = 14
10y + x = 10x + y ‑ 36
...
95
5­5 Applying Systems of Linear Equations.notebook
December 22, 2016
5­5 Applying Systems of Linear Equations
• Solution to a system of equations: _____________ _________ that
satisfies both equations in the system.
• A system of 2 linear equations can have _________, _____, or
_______________ _________ solution(s).
Methods
Best Time to Use
5­1 Graphing Systems of Equations
5­2 Substitution
5­3 Elimination using Addition and Subtraction
5­4 Elimination using Multiplication
5­5 Applying Systems of Linear Equations.notebook
December 22, 2016
Ex 1: Determine the best method to solve the following systems of equations. Then solve.
_____________________
_____________________
x + 3y = 7
____________________
2x ­ 4y = ­6 _____________________