document.write( "Question 81540: Write the equation of the line that passes through point (0, –9) with a slope of 6. \n" ); document.write( "
Algebra.Com's Answer #58397 by tutorcecilia(2152)![]() ![]() You can put this solution on YOUR website! Use the slope-intercept equation of a line: y=mx+b \n" ); document.write( "y=any y-value \n" ); document.write( "m=the slope of the line \n" ); document.write( "x=any corresponding x=value \n" ); document.write( "b=the y-intercept(where the line crosses the y-axis) \n" ); document.write( ". \n" ); document.write( "Plug-in point (0, -9) and slope= 6 into the formula and solve for the b-term: \n" ); document.write( "y=mx+b \n" ); document.write( "-9=(6)(0)+b \n" ); document.write( "-9=b \n" ); document.write( ". \n" ); document.write( "So,the equation of the line is: \n" ); document.write( "y=6x-9 [you only need the values of the slope and the y-intercept]. \n" ); document.write( ". \n" ); document.write( "checking: \n" ); document.write( "=9=6(0)-9 \n" ); document.write( "=9=-9 [checks out] \n" ); document.write( " |