document.write( "Question 701924: please help!
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\n" ); document.write( "\n" ); document.write( "3x-4y=8 is this a function?? how do you get domain and range?
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Algebra.Com's Answer #432672 by lwsshak3(11628)\"\" \"About 
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3x-4y=8 is this a function?? how do you get domain and range?
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\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.
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