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Standards/Math/North Dakota/8.F

8.F

8 Grade 8
8.EE
8.F
8.F.18.F.28.F.38.F.48.F.5
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8.NS
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Functions

8.F.1Understand that a function is a rule that assigns to each input exactly one output. Understand that the graph of a function is the set of ordered pairs consisting of an input and the corresponding output.8.F.2Compare properties of two functions each represented in a different way (algebraically, graphically, numerically in tables, and/or by verbal descriptions).8.F.3Interpret the equation y = mx + b as defining a linear function, whose graph is a straight line. Give examples of functions that are not linear.8.F.4Construct a function to model a linear relationship between two quantities. Determine the rate of change and initial value of the function from a description of a relationship or from two (x,y) values, including reading these from a table or from a graph. Interpret the rate of change and initial value of a linear function in terms of the situation it models, and in terms of its graph or a table of values.8.F.5Describe qualitatively the functional relationship between two quantities by analyzing a graph (may include where the function is increasing or decreasing, linear or nonlinear, etc.). Sketch a graph that exhibits the qualitative features of a function that has been described verbally.
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