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)\"\" \"About 
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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)
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\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]
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