document.write( "Question 1188641: Find the equation of the line whose slope is 3/2 and which passes through P, where P divides the line segment joining A(-2,6) and B(3,-4) in the ratio 2:3 internally. \n" ); document.write( "
Algebra.Com's Answer #819810 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Technically the statement of the problem is insufficient -- we don't know for sure whether the ratio 2:3 is AP:PB or BP:PA. \n" ); document.write( "I will guess that AP:PB = 2:3. \n" ); document.write( "From A to B is a change of +5 in the x direction and -10 in the y direction. \n" ); document.write( "P is (2/(2+3)) = 2/5 of the way from A to B. \n" ); document.write( "2/5 of 5 is 2; 2/5 of -10 is -4. \n" ); document.write( "The x coordinate of P is -2+2=0; the y coordinate is 6+(-4)=2. \n" ); document.write( "So we have a line through (0,2) with slope of 3/2. Since (0,2) is the y-intercept, you can plug the values directly into the slope-intercept form of the equation. \n" ); document.write( "y = mx+b \n" ); document.write( "y = (3/2)x+2 \n" ); document.write( " \n" ); document.write( " |