document.write( "Question 437745: How to work out the table to plot it on the graph \n" ); document.write( "

Algebra.Com's Answer #302825 by richard1234(7193) $\"\"$ $\"About$

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To plot a graph, first know what your input and output values are (usually x and y, but not necessarily).\r
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\n" ); document.write( "\n" ); document.write( "Next, pick a set of x-values that make the function easy to evaluate. For example, if you are doing $\"y+=+3x+%2B+5\"$ , you might pick x-values such as -2, -1, 0, 1, and 2. If you are doing a trigonometric function, picking values such as $\"pi%2F4\"$ , $\"pi%2F6\"$ , etc. can work.\r
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\n" ); document.write( "\n" ); document.write( "Also, make sure you have picked enough points. If you know your equation is linear, two points is sufficient. However, you will need more points to graph other functions, including trigonometric and higher-order polynomial functions. \n" ); document.write( "

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