document.write( "Question 636044: I need assistance with writing point-slope form for an equation with the slope and one point already given. one example is \"what is the point-slope form of a line through (4,-4) with a slope of -9/4?\" I don't even know how to begin solving this problem. I practically need a lesson on how to do this kind of thing in general. \n" ); document.write( "
Algebra.Com's Answer #400687 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Hi,
\n" ); document.write( "Using the standard slope-intercept form for an equation of a line y = mx + b
\n" ); document.write( " where m is the slope and b the y-intercept.
\n" ); document.write( "line through (4,-4) with a slope m = -9/4
\n" ); document.write( "\"y+=+highlight%28-9%2F4%29x+%2B+b\"
\n" ); document.write( "\"-4+=+highlight%28-9%2F4%29%2A4+%2B+b\" |Using ordered pair (x,y): (4,-4) to solve for b
\n" ); document.write( "5 = b
\n" ); document.write( " y = (-9/4)x + 5 (Note: line slants to the left (back 4 Up 9) from point(4,-4)
\n" ); document.write( "using point-slope form as the directions state
\n" ); document.write( "\"y+-+y%5B1%5D+=++%28-9%2F4%29%28x+-+x%5B1%5D%29\"
\n" ); document.write( "\"y+-+%28-4%29+=++%28-9%2F4%29%28x+-+4%29\"
\n" ); document.write( "\"y+%2B+4+=++%28-9%2F4%29%28x+-+4%29\" || which also says: y = (-9/4)x + 5)
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