document.write( "Question 161984: In y=4x, what happens to y ehn x is doubled?increased by 2?decreased by 3?halved?\r \n" );
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document.write( "a) Lets double x: so x becomes 2x \n" );
document.write( "y=4x \n" );
document.write( "y=4(2x) \n" );
document.write( "y=8x....y is doubled\r \n" );
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document.write( "b) Lets increase x by 2; so x becomes x+2 \n" );
document.write( "y=4x \n" );
document.write( "y=4(x+2) \n" );
document.write( "y=4x+8 so y increased by 8\r \n" );
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document.write( "c) Let x be decreased by 3 so x becomes x-3 \n" );
document.write( "y=4x \n" );
document.write( "y=4(x-3) \n" );
document.write( "y=4x-12....so y is decreased by 12\r \n" );
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document.write( "d) Let x be halved, so x becomes x/2 \n" );
document.write( "y=4x \n" );
document.write( "y=4(x/2) \n" );
document.write( "y=4x/2..... so y is halved \n" );
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