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

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Solving a System of Linear Equations in Two Variables - Problem 15

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Solving a System of Linear Equations in Two Variables - Problem 14

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

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Pretend you are in a boat or plane in still water/air and traveling x miles per hour. If you face into a current, your rate would be x - c ( where c is the speed of the current), because the current slows you down. If you turn with the current, so the current makes you move faster, then your new rate is x + c. Here we look at word problems that combine this current idea with the relationship that distance = rate times time.

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