document.write( "Question 107812: If possible please explain how you come up with each step.Thanks\r
\n" ); document.write( "\n" ); document.write( " Find the equation, in slope-intercept form, of the line that passes through the points (5, 6) and (-7, 3).Thanks
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Algebra.Com's Answer #78578 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
The slope intercept form is \"y+=+mx+%2B+b\"
\n" ); document.write( "m is the slope, b is the y-intercept
\n" ); document.write( "Each point is a solution to the equation
\n" ); document.write( "(5,6)
\n" ); document.write( "\"6+=+m%2A5+%2B+b\"
\n" ); document.write( "(-7,3)
\n" ); document.write( "\"3+=+m%2A%28-7%29+%2B+b\"
\n" ); document.write( "now solve for m and b
\n" ); document.write( "multiply the 2nd equation by -1 and add to the 1st
\n" ); document.write( "\"3+=+m%2A%28-7%29+%2B+b\"
\n" ); document.write( "\"-3+=+m%2A7+-+b\"
\n" ); document.write( "add to
\n" ); document.write( "\"6+=+m%2A5+%2B+b\"
\n" ); document.write( "\"3+=+m%2A12\"
\n" ); document.write( "\"m+=+1%2F4\"
\n" ); document.write( "Now find b, by substitution in either equation-I'll use 1st
\n" ); document.write( "\"6+=+%281%2F4%29%2A5+%2B+b\"
\n" ); document.write( "multiply both sides by 4
\n" ); document.write( "\"24+=+5+%2B+4b\"
\n" ); document.write( "\"4b+=+19\"
\n" ); document.write( "\"b+=+19%2F4\"
\n" ); document.write( "So, the equation is \"y+=+%281%2F4%29%2Ax+%2B+19%2F4\"
\n" ); document.write( "Check answer by seeing if it goes through both points
\n" ); document.write( "\"6+=+%281%2F4%29%2A5+%2B+19%2F4\"
\n" ); document.write( "\"6+=+5%2F4+%2B+19%2F4\"
\n" ); document.write( "\"24%2F4+=+24%2F4\" OK
\n" ); document.write( "also
\n" ); document.write( "\"3+=+%281%2F4%29%2A%28-7%29+%2B+19%2F4\"
\n" ); document.write( "\"3+=+-%287%2F4%29+%2B+19%2F4\"
\n" ); document.write( "\"12%2F4+=+12%2F4\" OK
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