document.write( "Question 360683: here's the math problem:y=2x+1
\n" ); document.write( "here's what i did: x|y
\n" ); document.write( " -2 -4 y=-2(-2)+1=-4
\n" ); document.write( " -1 -3 y=-2(-1)+1=-3
\n" ); document.write( " 0 1 y=-2(0)+1 =1
\n" ); document.write( " 1 1 y=-2(1)+1=1
\n" ); document.write( " 2 3 y=-2(2)+1=3
\n" ); document.write( " the we have to graph the x|y answers on a graph and when we graph it has to make a line or else we did something wrong.....my teacher did the problem above and when i graphed it didn't make a straight line..but he insist that he did it right HELP
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Algebra.Com's Answer #257401 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
y = 2x + 1 is a straight line.\r
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\n" ); document.write( "\n" ); document.write( "Here's a graph of that equation.\r
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\n" ); document.write( "\n" ); document.write( "\"graph%28600%2C600%2C-10%2C10%2C-20%2C20%2C2%2Ax%2B1%29\"\r
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\n" ); document.write( "\n" ); document.write( "here's the table of values for y = 2*x + 1 from x = -2 to x = 2\r
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document.write( "               x	y\r\n" );
document.write( "              -2       -3\r\n" );
document.write( "              -1       -1\r\n" );
document.write( "               0        1\r\n" );
document.write( "               1        3\r\n" );
document.write( "               2        5\r\n" );
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\r
\n" ); document.write( "\n" ); document.write( "It looks like you are forgetting to multiply first and then add.\r
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\n" ); document.write( "\n" ); document.write( "in the formula 2 * x + 1, you need to do the multiplication first and then add.\r
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\n" ); document.write( "\n" ); document.write( "if you put parentheses around the operations that need to be done first, then the equation would look like this:\r
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\n" ); document.write( "\n" ); document.write( "(2 * x) + 1\r
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\n" ); document.write( "\n" ); document.write( "if the value of x is 1, then 2 * 1 = 2 and then you add 1 to it to get 3.\r
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\n" ); document.write( "\n" ); document.write( "follow the same procedure for all values of x and you'll be ok.\r
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