document.write( "Question 277792: Graph:
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document.write( "f(x) = -2x, x<=-2
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document.write( "f(x) = -3,-2
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document.write( "f(x) = 4x-6, x>1
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document.write( "On these types of problems I am used to being given an x-substitute, for example, graph problem one when x = 2, I would then sub in the number and solve. I am perplexed about how to do this without a substitute.
Algebra.Com's Answer #202201 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "The second question was also messed up, it should have been \n" ); document.write( "-3, when -2 < x <= 1\r \n" ); document.write( "\n" ); document.write( "The way the problem is shown to me is \n" ); document.write( " f(x) = { \n" ); document.write( "and the three equations come within the single { which stretches to encompass all of them.\r \n" ); document.write( "\n" ); document.write( "Graph: \n" ); document.write( "f(x) = -2x, x<=-2 \n" ); document.write( "f(x) = -3, -2 \n" ); document.write( "--------------------- \n" ); document.write( "So this is the graph of a semented function. \n" ); document.write( "On the x-interval (-inf,-2] graph the line y = -2x \n" ); document.write( "On the x-interval (-2,1} graph the line y = -3 \n" ); document.write( "On the x-interval (1,+inf) graph the line y = 4x-6 \n" ); document.write( "---------------------------------------------------------- \n" ); document.write( "To do each of these you need to determine two points \n" ); document.write( "that are on each interval. \n" ); document.write( "For example, on the (-inf,-2) interval you could have \n" ); document.write( "(-5,10) and (-2,4) \n" ); document.write( "Draw a line segment thru those points ending at (-2,4). \n" ); document.write( "--- \n" ); document.write( "On the next interval you have points (-2,-3) and (1,-3) \n" ); document.write( "Draw a line sement connecting those points. \n" ); document.write( "------------------------ \n" ); document.write( "On the last interval you have points (1,-2) and arbitrary (4,10) \n" ); document.write( "Draw a line segment that starts at (1,-2) and passes thru (4,10) \n" ); document.write( " \n" ); document.write( "----------------------------------------------------- \n" ); document.write( "Those three line segments comprise the graph of f(x) \n" ); document.write( "======================================================\r \n" ); document.write( "\n" ); document.write( "Cheers, \n" ); document.write( "Stan H. |