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# Course 3, Lesson 49, Solving Rate Problems with Proportions and Equations

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Author: Hector Soto
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1. Construct viable arguments and critique the reasoning of others. 2. Attend to precision. 3. Graph proportional relationships, interpreting the unit rate as the slope of the graph. Compare two different proportional relationships represented in different ways. 4. Understand that a function is a rule that assigns to each input exactly one output. The graph of a function is the set of ordered pairs consisting of an input and the corresponding output. 5. Compare properties of two functions each represented in a different way (algebraically, graphically, numerically in tables, or by verbal descriptions). 6. Describe qualitatively the functional relationship between two quantities by analyzing a graph (e.g., where the function is increasing or decreasing, linear or nonlinear). Sketch a graph that exhibits the qualitative features of a function that has been described verbally.

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Tutorial

## Solving Rate Problems with Proportions and Equations

Source: clnorfolkne