document.write( "Question 259387: What is the y-intercept of the plane whose equation is 4x + 5y + z = 20? \n" ); document.write( "
Algebra.Com's Answer #190949 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"4x+%2B+5y+%2B+z+=+20\"?\r\n" );
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document.write( "The y-coordinate of the y-intercept of a plane is what you get \r\n" );
document.write( "when you substitute 0 for the other two letters and solve for y.\r\n" );
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document.write( "\"4%280%29%2B5y%2B%280%29=20\"\r\n" );
document.write( "\"0%2B5y%2B0=20\"\r\n" );
document.write( "\"5y=20\"\r\n" );
document.write( "\"y=4\"\r\n" );
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document.write( "So the y-intercept is the point (x,y,z) = (0,4,0)\r\n" );
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document.write( "Edwin
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