document.write( "Question 415640: can you help me find what the slope and the y-intercept are in this problum
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document.write( " f(x)= -8x-4 \n" );
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Algebra.Com's Answer #291351 by Theo(13342)![]() ![]() You can put this solution on YOUR website! this equation is in the form of y = mx + b where m is the slope and b is the y intercept.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "f(x) = y = -8x - 4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "m = -8 = slope\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "b = -4 = y intercept\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "graph of this equation is shown below:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the equation that is graphed is y = -8x - 4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the y intercept is the value of y when x equals 0.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "when x = 0, y = -4.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the slope is -8.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you can see this by tracking the change in y divided by the change in x.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "when x = 0, y = -4 \n" ); document.write( "when x = 1, y = -12 \n" ); document.write( "when x = 2, y = -20\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "let x1,y1 = 0,-4 \n" ); document.write( "let x2,y2 = 2,-20\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x2-x1 = 2 - 0 = 2 \n" ); document.write( "y2 - y1 = -20 - (-4) = -16\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "change in y divided by change in x = -16 / 2 = -8 which is your slope.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you can also see that the graph of the equation crosses the y axis when y = -4.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the value of y when x equals 0 falls on the y-axis.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |