document.write( "Question 427439: Write the slope-intercept equation for the line that passes through (2, -9) and (4, 1). \n" ); document.write( "

Algebra.Com's Answer #297262 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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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( "Using the point-slope formula, 
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document.write( "(2, -9) and 
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document.write( "(4, 1)   m = -10/-2 = 5
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document.write( " y = 5x + b
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document.write( " 1 = 5*4 + b
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document.write( "-19 = b
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document.write( " y = 5x-19  \n" );
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