Tuesday, July 28, 2009

When writing an equation in standard form, can you have a negative x term? ax+by=c, would be -ax+by=c?

example: -3x + 2y = 8. if a negative x term is not correct, what should i do instead?

When writing an equation in standard form, can you have a negative x term? ax+by=c, would be -ax+by=c?
As far as I know, standard form permits a negative coefficient for x, but I prefer not to start a line with the - sign so


- 3x + 2y = 8


when multiplied by - 1 becomes


3x - 2y = - 8
Reply:Multiply both sides of the equation by -1.
Reply:yes, you can have a negative coefficient for x


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