# Functions

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 The question says Assume angles that appears to be right angles are 90 degrees and sides that appear to be congruent are congruent. Find the perimeter and area of a trapezoid. Tutor.com determine which of the relations are functions- {(-2, 7), (-1,5), (0,3), (1,1), (2,1)} Tutor.com There's a certain part in functions that im not familiar with. Domains and ranges, i don't understand them. Tutor.com A function is like a machine: it has an input and an output. Math is Fun Using this virtual manipulative you may: * Graph a function * Trace a point along the graph * Dynamically vary function parameters * Change the range of values displayed in the graph * Graph multiple functions * Restrict the domain of a function * Zoom in on a region of the graph National Library of Virtual Manipulatives A step by step tutorial, with detailed solutions, on how to find the domain and range of real valued functions is presented. First the definitions of these two concepts are presented. A table of domain and range of basic functions might be useful to answer the questions below. Domain and Range of a Function Graphing cubic functions. Any function of the form f(x) = x3 is referred to as a cubic function. University of Georgia's, Jim Wilson's
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