document.write( "Question 241609: I have two question.\r
\n" ); document.write( "\n" ); document.write( "write the equation of the line. Through (8,-9), perpendicular to 7x + 9y = -25
\n" ); document.write( "question #2 is through (-6,-7) parallel to -2x + 7y=26
\n" ); document.write( "Can you please Help????? \n" ); document.write( "
Algebra.Com's Answer #176968 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
write the equation of the line.
\n" ); document.write( "Through (8,-9), perpendicular to 7x + 9y = -25
\n" ); document.write( "-----
\n" ); document.write( "Find the slope, m, of the line by putting the eqn into slope-intercept form,
\n" ); document.write( "y = mx + b
\n" ); document.write( "That means solve for y:
\n" ); document.write( "7x + 9y = -25
\n" ); document.write( "9y = -7x - 25
\n" ); document.write( "y = (-7/9)x - 25/9
\n" ); document.write( "The slope is -7/9
\n" ); document.write( "------------------
\n" ); document.write( "The slope of lines perpendicular is the negative inverse, +9/7.
\n" ); document.write( "Use y = mx + b again with the point to find b:
\n" ); document.write( "-9 = (9/7)*8 + b
\n" ); document.write( "b = -9 - 72/7
\n" ); document.write( "b = -135/7
\n" ); document.write( "--> y = (9/7)x - 135/7 slope-intercept form
\n" ); document.write( "or 9x - 7y = 135 Standard form
\n" ); document.write( "-----------------
\n" ); document.write( "question #2 is through (-6,-7) parallel to -2x + 7y=26
\n" ); document.write( "Do it the same way.
\n" ); document.write( "If you have questions, or to check your work, email me at
\n" ); document.write( "gsihoutx@aol.com\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );