document.write( "Question 596424: What is the x intercept of the graph of the line that passes through the points (1,-15)and (2,-2) \n" ); document.write( "
Algebra.Com's Answer #377722 by nerdybill(7384)\"\" \"About 
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What is the x intercept of the graph of the line that passes through the points (1,-15)and (2,-2)
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\n" ); document.write( "slope = (y2-y1)/(x2-x1)
\n" ); document.write( "slope = (-2-(-15))/(2-1)
\n" ); document.write( "slope = (-2+15)/(1)
\n" ); document.write( "slope = 13
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\n" ); document.write( "determine equation of line by plugging in info into \"point-slope\" form:
\n" ); document.write( "y - y1 = m(x -x1)
\n" ); document.write( "y - (-2) = 13(x - 2)
\n" ); document.write( "y + 2 = 13x - 26
\n" ); document.write( "y = 13x - 28
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\n" ); document.write( "find x-intercept by setting y to zero:
\n" ); document.write( "y = 13x - 28
\n" ); document.write( "0 = 13x - 28
\n" ); document.write( "28 = 13x
\n" ); document.write( "28/13 = x
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\n" ); document.write( "answer: (28/13, 0)\r
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