document.write( "Question 214303: I have a homework assignment and I need an example of one so I can answer the rest of the questions. Find the line passing through the following pairs of points?
\n" ); document.write( "(3, 11) (6, 20)
\n" ); document.write( "Can you please show me how to figure these kind of questions out. Thanks
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #161871 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
Find the equation of the line that passes through the two points (3,11) and (6,20)
\n" ); document.write( "Since you don't specify the form of equation you need, I'll assume that the \"slope-intercept\" form (y = mx+b) is acceptable.
\n" ); document.write( "Start by finding the slope (m) of the line using the two given points.
\n" ); document.write( "\"m+=+%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\" where:\"x%5B1%5D+=+3\", \"y%5B1%5D+=+11\", \"x%5B2%5D+=+6\", and \"y%5B2%5D+=+20\" Making the appropriate substitutions, we get:
\n" ); document.write( "\"m+=+%2820-11%29%2F%286-3%29\"
\n" ); document.write( "\"m+=+9%2F3\"
\n" ); document.write( "\"m+=+3\"
\n" ); document.write( "So you can start out with:
\n" ); document.write( "\"y+=+3x%2Bb\" To find the value of b, the y-intercept, substitute the x- and y-coordinates of either one of the two given points. Using the first point (3,11) we have:
\n" ); document.write( "\"11+=+3%283%29%2Bb\"
\n" ); document.write( "\"11+=+9%2Bb\" Subtract 9 from both sides.
\n" ); document.write( "\"2+=+b\"
\n" ); document.write( "The final equation is:
\n" ); document.write( "\"highlight%28y+=+3x%2B2%29\"
\n" ); document.write( "
\n" );