document.write( "Question 837491: What is the equation of the line whose x-intercept is -7 and y-intercept is -8 in the form Ax + By = C\r
\n" ); document.write( "\n" ); document.write( "x-intercept is -7 when y = 0 (-7,0)
\n" ); document.write( "y-intercept is -8 when x = 0 (0,-8)\r
\n" ); document.write( "\n" ); document.write( "y = mx + b
\n" ); document.write( "y = m-7 + (-8)
\n" ); document.write( "0 = m-7 + (-8)
\n" ); document.write( "8 = m-7
\n" ); document.write( "-8/7 = m\r
\n" ); document.write( "\n" ); document.write( "y = -8/7x + (-8)\r
\n" ); document.write( "\n" ); document.write( "Ax + By = C : -8/7x + 1y = -8 <--- is that correct?\r
\n" ); document.write( "\n" ); document.write( "Is there a 1 in front of y just because a variable cannot be on it's own? \n" ); document.write( "

Algebra.Com's Answer #504613 by richard1234(7193) $\"\"$ $\"About$

You can put this solution on YOUR website!
Correct, except you made a sign error at the very last step, should be (8/7)x + y = -8. You don't need a 1 in front of the y; conventionally, the 1 is left out. \n" ); document.write( "

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