document.write( "Question 391335: I really need some help here! Guys. Sorry to disturb you but please help me with my homework:\r
\n" ); document.write( "\n" ); document.write( "If (1,m),(-1,1),(3,9), and (n,13) are on the same line, find m and n.\r
\n" ); document.write( "\n" ); document.write( "*this is about missing coordinates of the line through given points that has given
\n" ); document.write( "the slope.\r
\n" ); document.write( "\n" ); document.write( "THANKS! \n" ); document.write( "

Algebra.Com's Answer #277627 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "Hi,         
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document.write( "Using the point-slope formula, 
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document.write( "    (-1,1),(3,9)
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document.write( "m =  9-1  /3-(-1) = 8/4 = 2/1
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document.write( "Using the standard slope-intercept form for an equation of a line y = mx + b 
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document.write( " where m is the slope and b the y-intercept. 
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document.write( " y = 2x + b Using ordered pair(-1,1) to solve for b
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document.write( " 1 = 2(-1) + b
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document.write( " 3 = b
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document.write( "Equation of the line is:
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document.write( " 
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document.write( " (1,m) would be (1,5)
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document.write( "  y = 2*1 + 3
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document.write( " (n,13)would be (5,13)
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document.write( " 13 = 2x + 3
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document.write( " 10  = 2x
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document.write( "  5= x \n" );
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