Big Ideas Math: Modeling Real Life, Grade 8
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Big Ideas Math: Modeling Real Life, Grade 8 View details
2. Representations of Functions
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Exercise 12 Page 286

The word equals divides the statement into what should be on the left-hand side and what should be on the right-hand side of the equation.

y=x^3

Practice makes perfect
We have been given a statement and we need to translate it into an equation. The output is the cube of the input. Every equation has an equals sign and values or expressions on either side of it. Key words and phrases such as is, is equal to, and equals tell us about the placement of the equals sign.

The output is the cube of the input. ⇕ The output = the cube of the input. On the left-hand side we have one key word, output. This word represents the variable y. The output → y On the right-hand side, the key words are input and cube. These words represents the variable x and the operations that will be used in our equation. The cube indicates the power of the variable. the cube of the input → x^3 Putting these sides together, we have a complete equation. y = x^3