Posted by **Celina** on Thursday, December 18, 2008 at 5:01pm.

Here's the question I'm having trouble with:

Tell how you would identify the intercepts for the graph of the equation:

3x + 6y = 18

I'm not exactly sure how you would find the intercepts from this equation.

Thanks!

- Algebra -
**RED FIRE**, Thursday, December 18, 2008 at 5:06pm
would you know how to find them if you put it into y=mx+b form?

- Algebra -
**Celina**, Thursday, December 18, 2008 at 5:10pm
Yes! I see, I didn't really think of it that way until after I posted the message. Thank you!

- Algebra -
**RED FIRE**, Thursday, December 18, 2008 at 5:11pm
lol wow i actually helped ?!

i was just guessing .. im only in grade 11 anyways

- Algebra -
**Reiny**, Thursday, December 18, 2008 at 5:11pm
If they are written in the form you have, it is often very easy to find

remember to find the x-intercept you let y=0 and to

find the y-intercept you let the x=0

of course letting some variable equal to zero makes that term disappear.

so to let x=0, block out the x term with your little finger, what do you see?

6y = 18, then y = 3

for the x-intercept, block out the y-term with your little finger and ...

x = 6

this works really neat if the x and y coefficients both divide evenly into the constant

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