Construction HS ACED A 4 Literal Equations Bellwork

Construction HS. A-CED. A. 4 Literal Equations

Bellwork • Think about a time you had to rearrange something. • Write down what you rearranged and why you did it. • Share with your partner.

Objectives 1. Define terminology 2. Explain the steps in solving a literal equation 3. Solve literal equations to highlight a quantity of interest

Math Check The math skill you will need to know today to be successful is solving equations. Solve for x 1. 2. 3. What does PEMDAS stand for?

Math Check Answers 1. 2.

Math Check Answer P E MD AS Parentheses Exponents Multiplication/Division as it appears left to right Addition/Subtraction as it appears left to right Please Excuse My Dear Aunt Sally

Terminology Literal equation an equation with more than one variable, such as a formula where constants are represented by variables. Example P = a + b + c to find the perimeter of a triangle.

Benefits to You • To rearrange formulas to highlight another quantity of interest makes it easier if you need to do many problems always solving for the same variable. • Example: To find the perimeter of a square we use the formula P = 4 s. If we solve for s we can then substitute in a perimeter and quickly find the side.

Steps 1. Undo by using inverse operations as in solving regular equations to highlight the desired variable by doing the opposite order of operations. 1. Do the same thing to both sides.

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