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Solving a System of Linear Equations in Two Variables  Problem 11
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
One strategy for approaching mixture problems is to write two equations: one that represents amount of item only, and the second that represents amount times cost of each item. From there, you can choose to solve by elimination or substitution. Be sure to clearly define what your variables represent so you can interpret your solution in the problem context.
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Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
Your tutorials are good and you have a personality as well. I hope you have more advanced college level stuff, because I like the way you teach.”
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Sample Problems (18)
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Solving a System of Linear Equations in Two Variables
Problem 1 10,206 viewsSolve the system:
4x − 2y = 7x + 2y = 3 
Solving a System of Linear Equations in Two Variables
Problem 2 6,373 viewsSolve the system:
2x − 4y = 35x + 10y = 7 
Solving a System of Linear Equations in Two Variables
Problem 3 5,159 viewsSolve the system:
6x + 21y = 12x + 7 y = 2 2 
Solving a System of Linear Equations in Two Variables
Problem 4 719 views 
Solving a System of Linear Equations in Two Variables
Problem 5 677 views 
Solving a System of Linear Equations in Two Variables
Problem 6 668 views 
Solving a System of Linear Equations in Two Variables
Problem 7 548 views 
Solving a System of Linear Equations in Two Variables
Problem 8 602 views 
Solving a System of Linear Equations in Two Variables
Problem 9 507 views 
Solving a System of Linear Equations in Two Variables
Problem 10 542 views 
Solving a System of Linear Equations in Two Variables
Problem 11 482 views 
Solving a System of Linear Equations in Two Variables
Problem 12 336 views 
Solving a System of Linear Equations in Two Variables
Problem 13 351 views 
Solving a System of Linear Equations in Two Variables
Problem 14 313 views 
Solving a System of Linear Equations in Two Variables
Problem 15 322 views 
Solving a System of Linear Equations in Two Variables
Problem 16 336 views 
Solving a System of Linear Equations in Two Variables
Problem 17 288 views 
Solving a System of Linear Equations in Two Variables
Problem 18 327 views
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