document.write( "Question 858409: How do I graph y=-4x? \n" ); document.write( "

Algebra.Com's Answer #517202 by math-vortex(648) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Hi, there--\r\n" );
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document.write( "Question:\r\n" );
document.write( "How do I graph y = -4x?\r\n" );
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document.write( "Solution:\r\n" );
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document.write( "Remember that you can represent an equation as a table and as a graph. I would start by build a table of ordered pair that make the equation true. For example,\r\n" );
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document.write( "When x is 0, y is -4*0 = 0. So, the ordered pair (0,0) is part of the graph.\r\n" );
document.write( "When x is 1, y is -4*1 = -4. So, the ordered pair (1, -4) is part of the graph.\r\n" );
document.write( "When x is -2, y is -4*-2 = 8. So the ordered pair (-2, 8) is part of the graph.\r\n" );
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document.write( "Now we have a table that looks like this:\r\n" );
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document.write( "You can keep going like this for as long as you want, but usually 3 of 4 points will give you a sense of what's going on.\r\n" );
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document.write( "Now we graph those points on an x-y coordinate grid.\r\n" );
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document.write( "We see that these points are part of a straight line. We can connect the dots. Every ordered pair on the line makes the equation y=-4x TRUE. Every ordered pair off that line makes the equation FALSE.\r\n" );
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document.write( "If you have questions about the solution, feel free to email.\r\n" );
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document.write( "Mrs. Figgy\r\n" );
document.write( "math.in.the.vortex@gmail.com\r\n" );
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