document.write( "Question 13770: The slope-intercept equation of the line through the points (7.1,-8.3) and (-2.5,6.7) is y=mx+b.\r
\n" ); document.write( "\n" ); document.write( "Where m= 15/-9.6 and b=? \n" ); document.write( "

Algebra.Com's Answer #6889 by Alwayscheerful(414) $\"\"$ $\"About$

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Well, you already have the slope (which is m) so you can plug it right in the equation. \r
\n" ); document.write( "\n" ); document.write( "y=15/-9.6x+b\r
\n" ); document.write( "\n" ); document.write( "Then in order to solve for b, you must plug in numbers for b and you have two choices.
\n" ); document.write( "(7.1,-8.3) and (-2.5, 6.7)
\n" ); document.write( "You can choose which ever one is easier for you and i'll use (-2.5, 6.7)
\n" ); document.write( "As you probably know, -2.5 is the X value and 6.7 is your Y value.
\n" ); document.write( "Then plug them in their places\r
\n" ); document.write( "\n" ); document.write( "6.7=15/-9.6(-2.5)+b
\n" ); document.write( "To make it easier, -2.5 can be converted into -5/2
\n" ); document.write( "6.7=125/32+b
\n" ); document.write( "125/32=3.90625
\n" ); document.write( "6.7-3.90625=b
\n" ); document.write( "b=2.79375
\n" ); document.write( "in fraction form, b=447/160\r
\n" ); document.write( "\n" ); document.write( "The final answer in slope-intercept form is
\n" ); document.write( "y=15/-9.6x+447/160 \n" ); document.write( "

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