document.write( "Question 111767: can someone please help me.
\n" ); document.write( "A. Find the corresponding y values for x=-2,-1,0,1,2,3,if y=x^2-x-2
\n" ); document.write( "answer(fill in y column)
\n" ); document.write( "x_____________y
\n" ); document.write( "-2
\n" ); document.write( "-1
\n" ); document.write( "0
\n" ); document.write( "1
\n" ); document.write( "2
\n" ); document.write( "3
\n" ); document.write( "B. use microsoft exel to plot the points found in part A and to sketch the graph. \n" ); document.write( "

Algebra.Com's Answer #81543 by jim_thompson5910(35256) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( " $\"f%28x%29=x%5E2-1x-2\"$ Start with the given function.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-2%29=%28-2%29%5E2-1%28-2%29-2\"$ Plug in $\"x=-2\"$ . In other words, replace each x with -2.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-2%29=%284%29-1%28-2%29-2\"$ Evaluate $\"%28-2%29%5E2\"$ to get 4.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-2%29=%284%29%2B2-2\"$ Multiply -1 and -2 to get 2\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-2%29=4\"$ Now combine like terms\r
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\n" ); document.write( "\n" ); document.write( "-----------Now let's evaluate another value---------\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%29=x%5E2-1x-2\"$ Start with the given function.\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"f%28-1%29=%28-1%29%5E2-1%28-1%29-2\"$ Plug in $\"x=-1\"$ . In other words, replace each x with -1.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-1%29=%281%29-1%28-1%29-2\"$ Evaluate $\"%28-1%29%5E2\"$ to get 1.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-1%29=%281%29%2B1-2\"$ Multiply -1 and -1 to get 1\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28-1%29=0\"$ Now combine like terms\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "-----------Now let's evaluate another value---------\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%29=x%5E2-1x-2\"$ Start with the given function.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%280%29=%280%29%5E2-1%280%29-2\"$ Plug in $\"x=0\"$ . In other words, replace each x with 0.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%280%29=%280%29-1%280%29-2\"$ Evaluate $\"%280%29%5E2\"$ to get 0.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%280%29=%280%29%2B0-2\"$ Multiply -1 and 0 to get 0\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"f%280%29=-2\"$ Now combine like terms\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "-----------Now let's evaluate another value---------\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"f%28x%29=x%5E2-1x-2\"$ Start with the given function.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%281%29=%281%29%5E2-1%281%29-2\"$ Plug in $\"x=1\"$ . In other words, replace each x with 1.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%281%29=%281%29-1%281%29-2\"$ Evaluate $\"%281%29%5E2\"$ to get 1.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%281%29=%281%29-1-2\"$ Multiply -1 and 1 to get -1\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"f%281%29=-2\"$ Now combine like terms\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "-----------Now let's evaluate another value---------\r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%29=x%5E2-1x-2\"$ Start with the given function.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%282%29=%282%29%5E2-1%282%29-2\"$ Plug in $\"x=2\"$ . In other words, replace each x with 2.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%282%29=%284%29-1%282%29-2\"$ Evaluate $\"%282%29%5E2\"$ to get 4.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%282%29=%284%29-2-2\"$ Multiply -1 and 2 to get -2\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"f%282%29=0\"$ Now combine like terms\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "-----------Now let's evaluate another value---------\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"f%28x%29=x%5E2-1x-2\"$ Start with the given function.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%283%29=%283%29%5E2-1%283%29-2\"$ Plug in $\"x=3\"$ . In other words, replace each x with 3.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%283%29=%289%29-1%283%29-2\"$ Evaluate $\"%283%29%5E2\"$ to get 9.\r
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\n" ); document.write( "\n" ); document.write( " $\"f%283%29=%289%29-3-2\"$ Multiply -1 and 3 to get -3\r
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\n" ); document.write( "\n" ); document.write( " $\"f%283%29=4\"$ Now combine like terms\r
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\n" ); document.write( "\n" ); document.write( "Now lets make a table of the values we have calculated\r
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document.write( " x y
 -2 4
 -1 0
 0 -2
 1 -2
 2 0
 3 4\r\n" );
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Now plot the points\r
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\r
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\n" ); document.write( "\n" ); document.write( "Now connect the points to graph $\"y=x%5E2-x-2\"$ (note: the more points you plot, the easier it is to draw the graph)\r
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