**Oklahoma Academic Education Standards**. A function is a rule that is performed on a number, called an input, to produce a result called an output. The rule consists of one or more mathematical operations that are performed on the input. An example of a function is y = 2x + 3, where x is the input and y is the output. The operations of multiplication and addition are performed on the input, x, to produce the output, y. By substituting a number for x, an output can be determined. Read More...

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OK.7.A. Algebraic Reasoning & Algebra (A)

7.A.1. Understand the concept of proportionality in real-world and mathematical situations, and distinguish between proportional and other relationships.

7.A.1.2. Recognize that the graph of a proportional relationship is a line through the origin and the coordinate (1,r), where both r and the slope are the unit rate (constant of proportionality, k).

7.A.4. Use order of operations and properties of operations to generate equivalent numerical and algebraic expressions containing rational numbers and grouping symbols; evaluate such expressions.

7.A.4.2. Apply understanding of order of operations and grouping symbols when using calculators and other technologies.

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