document.write( "Question 701924: please help!
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document.write( "3x-4y=8 is this a function?? how do you get domain and range? \n" );
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Algebra.Com's Answer #432672 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! 3x-4y=8 is this a function?? how do you get domain and range? \n" ); document.write( "** \n" ); document.write( "Rewrite equation to express y in terms of x. \n" ); document.write( "3x-4y=8 \n" ); document.write( "4y=3x-8 \n" ); document.write( "y=3x/4-2 \n" ); document.write( "You can see that for each x there is one y-value; therefore, this is a function by definition. \n" ); document.write( "You can also see that there is no restriction on what the x values can be, so the domain is (-∞,∞) or all real numbers. \n" ); document.write( "To determine range interchange x and y and solve for y. This is equivalent to expressing x in terms of y. \n" ); document.write( "3x-4y=8 \n" ); document.write( "3y-4x=8 \n" ); document.write( "3y=4x+8 \n" ); document.write( "y=4x/3+8/3 \n" ); document.write( "You can also see that there is no restriction on what the x values can be, so the range is (-∞,∞) or all real numbers. \n" ); document.write( " |