document.write( "Question 153012This question is from textbook Algebra structure and method book 1
\n" ); document.write( ": can you please help me: (((write an equation for the line with the slope 3 going through the point (1,-2)))) \n" ); document.write( "
Algebra.Com's Answer #112462 by nerdybill(7384)\"\" \"About 
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can you please help me: (((write an equation for the line with the slope 3 going through the point (1,-2))))
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\n" ); document.write( "For the \"slope-intercept\" form of a line:
\n" ); document.write( "y = mx + b
\n" ); document.write( "where
\n" ); document.write( "m is slope
\n" ); document.write( "b is the y-intercept at (0, b)
\n" ); document.write( ".
\n" ); document.write( "Your problem gives you the slope (m) as 3, the only thing you're missing is the y-intercept (b).
\n" ); document.write( "Your problem also gives you a single point (1, -2) on the line -- we can use this to find 'b'.
\n" ); document.write( ".
\n" ); document.write( "To find 'b', plug the given m (slope) and the given point into:
\n" ); document.write( "y = mx + b
\n" ); document.write( "Plugging in our slope of 3:
\n" ); document.write( "y = 3x + b
\n" ); document.write( "Plugging in our single point of (1, -2):
\n" ); document.write( "-2 = 3(1) + b
\n" ); document.write( "Now, we can solve for 'b':
\n" ); document.write( "-2 = 3 + b
\n" ); document.write( "-5 = b
\n" ); document.write( ".
\n" ); document.write( "Finally, now that we know:
\n" ); document.write( "m = 3
\n" ); document.write( "b = -5
\n" ); document.write( "plug the above into:
\n" ); document.write( "y = mx + b
\n" ); document.write( "y = 3x + (-5)
\n" ); document.write( "y = 3x - 5 (that's it, you're done!)\r
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