document.write( "Question 262518: Can you help me write a linear equation in slope intercept form for this:
\n" ); document.write( "(3,-7) with a slope of m=-2 \n" ); document.write( "
Algebra.Com's Answer #193386 by dabanfield(803)\"\" \"About 
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Can you help me write a linear equation in slope intercept form for this:
\n" ); document.write( "(3,-7) with a slope of m=-2\r
\n" ); document.write( "\n" ); document.write( "The slope-intercept form of a line is:\r
\n" ); document.write( "\n" ); document.write( "y = m*x + b\r
\n" ); document.write( "\n" ); document.write( "In this form the slope is m and b is the value of y where the line crosses the y-axis (that is, when x = 0).\r
\n" ); document.write( "\n" ); document.write( "Since the slope m, in this case, is -2 we know:\r
\n" ); document.write( "\n" ); document.write( "1.) y = -2*x + b\r
\n" ); document.write( "\n" ); document.write( "We still need to find b. Since the line passes through the point (3,-7) we know that when x=3, y has the value -7. So substituting in 1.) we have:\r
\n" ); document.write( "\n" ); document.write( "-7 = -2*3 + b
\n" ); document.write( "-7 = -6 + b
\n" ); document.write( "b = -7 + 6 = -1\r
\n" ); document.write( "\n" ); document.write( "So we have: y = -2x - 1
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