Thread: Coordinate geometry question

Just a really quick one, suppose I have a line of equation: y=1/2x+5/2

The next part of the question asks for this in the form of ax+by+c=0

How do I convert from y=mx+c to ax+by+c=0?

Thank youuu!

Originally Posted by hymnseeker

Just a really quick one, suppose I have a line of equation: y=1/2x+5/2

The next part of the question asks for this in the form of ax+by+c=0

How do I convert from y=mx+c to ax+by+c=0?

Thank youuu!

bring everything to one side and leave 0 on the other side and (in this case) multiply through by 2 when done

Thanks for the reply, so just let y=0?

1/2x+5/2=0

Does this satisfy what the question wants in asking for ax+by+c=0?

Originally Posted by hymnseeker

Thanks for the reply, so just let y=0?

1/2x+5/2=0

Does this satisfy what the question wants in asking for ax+by+c=0?

did you read what i said? i said bring everything over to one side, how does that translate to equating y to zero?

............subtract y from both sides

...............multiply through by 2



which is the same thing as




here a = 1, b = -2 and c = 5

Thank you for your help. Needed to see it visually - and in answer to your question (although I suspect it was rhetorical), yes, I did read what you said first off.

Originally Posted by hymnseeker

Thank you for your help. Needed to see it visually - and in answer to your question (although I suspect it was rhetorical), yes, I did read what you said first off.

yes, it was rhetorical. you're welcome, and good luck with your class