document.write( "Question 750238: hello, need more help.
\n" ); document.write( "Find the Y-intercept and the X-intercept for the line determined by the points (1,-2) and (3,4). thank you for any help, I am looking for examples so I can start figuring this out. thanks again!
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Algebra.Com's Answer #456453 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
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Solved by pluggable solver: Find the equation of line going through points
hahaWe are trying to find equation of form y=ax+b, where a is slope, and b is intercept, which passes through points (x1, y1) = (1, -2) and (x2, y2) = (3, 4).
\n" ); document.write( " Slope a is \"a+=+%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29+=+%284--2%29%2F%283-1%29+=+3\".
\n" ); document.write( " Intercept is found from equation \"a%2Ax%5B1%5D%2Bb+=+y%5B1%5D\", or \"3%2A1+%2Bb+=+-5\". From that,
\n" ); document.write( " intercept b is \"b=y%5B1%5D-a%2Ax%5B1%5D\", or \"b=-2-3%2A1+=+-5\".
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\n" ); document.write( " y=(3)x + (-5)
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\n" ); document.write( " Your graph:
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\n" ); document.write( "\n" ); document.write( "since \"y=3x+-5\" is slope-intercept form \"y=mx+%2Bb\" where \"m+\" is a slope and \"b\" is a \"y-intercept\"\r
\n" ); document.write( "\n" ); document.write( "so, \"y-intercept\" is \"b=-5\"; point (\"0\",\"-5\")\r
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\n" ); document.write( "\n" ); document.write( "\"x-intercept\": set \"y=0\" to find \"x-intercept\"\r
\n" ); document.write( "\n" ); document.write( "\"0=3x+-5\"\r
\n" ); document.write( "\n" ); document.write( "\"5=3x\"\r
\n" ); document.write( "\n" ); document.write( "\"5%2F3=x\"\r
\n" ); document.write( "\n" ); document.write( "\"1.67=x\"...\"x-intercept\" is \"1.67\"; point (\"0\",\"0\")\r
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