document.write( "Question 1049530: give the equation of this line in slope intercept form, the slope is -3, passes through (4,-1), y=3x+, i'm not sure what to do \n" ); document.write( "
Algebra.Com's Answer #665087 by Edwin McCravy(20064)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "y = mx + b, where m is the slope -3 and b (unknown) is\r\n" );
document.write( "the y-coordinate of the y-intercept.\r\n" );
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document.write( "y = -3x + b\r\n" );
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document.write( "It passes through (4,-1),\r\n" );
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document.write( "So the equation is true if we substitute x=4 and y=-1\r\n" );
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document.write( "-1 = -3(4) + b\r\n" );
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document.write( "-1 = -12 + b\r\n" );
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document.write( "11 = b\r\n" );
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document.write( "Now we substitute b = 11 in y = -3x + b\r\n" );
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document.write( "y = -3x + 11\r\n" );
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document.write( "That's the equation of the line\r\n" );
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document.write( "We get some points\r\n" );
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document.write( "x | y\r\n" );
document.write( "0 |11\r\n" );
document.write( "2 | 5\r\n" );
document.write( "3 | 2\r\n" );
document.write( "5 |-4\r\n" );
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document.write( "Edwin
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