document.write( "Question 90378: How can I Find the slope of the line passing through the points (–2, 1) and (3, 9). and show in a graph? thank you in advance for your help \n" ); document.write( "
Algebra.Com's Answer #65623 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! THE SLOPE IS FOUND BY (Y2-Y1)/(X2-X1). THUS: \n" ); document.write( "(9-1)/(3+5)=8/8=1 WHICH IS THE SLOPE OF THE LINE PASSING THROUGH THESE 2 POINTS. \n" ); document.write( "1=1*-2+b \n" ); document.write( "1=-2+b \n" ); document.write( "b=1+2 \n" ); document.write( "b=3 \n" ); document.write( "thus we have the line equation of: y=x+3 \n" ); document.write( "now we need to find the y intercept by substituting one set of point x & y values into the line formula [Y=mX+b] and solve for b which isthe y intercept:\r \n" ); document.write( "\n" ); document.write( "GRAPH FOLLOWS: |