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This chapter provides solutions to various real-life problems that can be modeled using systems of linear equations in two variables. Topics include determining land areas, costs of items, photos that can be stored in memory cards, rowing team speeds, investments, and mixing ingredients for a recipe. Students will practice solving systems of equations using substitution and elimination methods.
Typology: Exercises
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Chapter 4.3: Solving Applications of Systems of Linear Equations in 2 Variables
Let ___ = ______________________________________
Let ___ = ______________________________________
Equations:
Answers: 69,700 sq. ft. = my property 70,273 sq. ft. = my neighbor’s property
Let ___ = ______________________________________
Let ___ = ______________________________________
Equations:
Answers: $3 = water bottle $3.50 = pretzel
Let ___ = ______________________________________
Then ___________ = _____________________________
Equation:
Answers: 129 photos = 512-MB 913 photo = 4-GB
Let ___ = ______________________________________
Let ___ = ______________________________________
Equations:
Answers: 13.2 mph = the team’s rowing speed in still water 3.5 mph = the speed of the current
Let ___ = ______________________________________
Let ___ = ______________________________________
Equations:
Answers: 0.36 hours = the guy’s time 0.2 hours = the girl’s time
Answer: In 2025 both salaries will be $53,000 per year