Polynomials (Chapters 6 & 7)
Lesson 5: Applications of Algebraic Models
Learning Goals of Lesson 5
By the end of this lesson, I can:
identify what each variable in an equation represents
substitute given value for each variable into the equation
solve for the unknown variable in the equation algebraically
check if my answer is reasonable with the given context
Important:
"You can only solve one equation with only one variable!"
If you have more than one variable in an equation, read the question carefully to identify all given values. You should be given a total number of "one less than the number of variables in the equation" in order to solve the equation.
After substituting the given values of all other variables involved in the given equation, you should be left with one equation with one unknown (variable).
Video 1: Problem Solving with a TwoVariable Equation
Video 2: Problem Solving with a ThreeVariable Equation
Video 3: Problem Solving with a FourVariable Equation
Handout 314:

