1-3
Literal Equations
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SOLVE IT!
SO
You are ordering pizzas and sandwiches. You have a budget of $80. How many
sandwiches can you buy if you buy 4 pizzas? 5 pizzas? Explain your answer.
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Pizza $10
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Sandwich
$5
An
Analyze
Mathematical Relationships (1)(F) What mathematical relationships did
you identify in the problem? How did you use them to solve the problem?
yo
Lesson 1-3 | Literal Equations
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TEKS Process Standard (1)(A)
Problem 1
Pr
Got It?
Rewriting a Literal Equation
a. Solve the equation 4 = 2m - 5n for m. What are the values of m when
n = -2, 0, and 2?
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b. Solve Problem 1 by substituting x = 3 and x = 6 into the equation
10x + 5y = 80 and then solving for y in each case. Do you prefer this
method or the method shown in Problem 1? Explain.
Problem 2
Pr
Got It?
Rewriting a Literal Equation With
Only Variables
What equation do you get when you solve -t = r + px for x?
Lesson 1-3 | Literal Equations
14
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Problem 3
Pr
Got It?
Rewriting a Geometric Formula
What is the height of a triangle that has an area of 24 in.2 and a base with a
length of 8 in.?
ELPS
ELPS
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Read the Got It and circle what it is asking you to find. Put a box around
the information you are given. How can you use what you know to find
the quantity you do not know?
TEKS Process Standard (1)(E)
Problem 4
Pr
Got It?
Rewriting a Formula
Pacific gray whales migrate annually from the waters near Alaska to the waters
near Baja California, Mexico, and back. The whales travel a distance of about
5000 mi each way at an average rate of 91 mi per day. About how many days does
it take the whales to migrate one way?
Lesson 1-3 | Literal Equations
15
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