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Mathematics 16 Online
OpenStudy (anonymous):

How would I graph the following line: 2x+3y= -3

OpenStudy (anonymous):

find any 2 points on the line

OpenStudy (anonymous):

if you write it as slope-intercept for it would be easier to graph. So: 3y= -2x -3 -> y= -2/3x -1 Then you would have the -1 as the y intercept and your slope would be -2/3. Hope I helped. :)

OpenStudy (anonymous):

Why not work out where the line crosses the axes? Ie find the intercepts.

OpenStudy (anonymous):

When x= 0, y = -1

OpenStudy (anonymous):

but graphing these answeres only gives me one point though...

OpenStudy (anonymous):

one point? it should give you a line.

OpenStudy (anonymous):

Hmm, maybe I am doing something wrong. Let me try again..

OpenStudy (anonymous):

Now put y=0 and x = -1.5. Two points.

OpenStudy (anonymous):

it gives me a horizontal line. Would that be correct?

OpenStudy (anonymous):

hmm, it should give you a negative sloped line.

OpenStudy (anonymous):

That's what i initially thought, but when I imput it, that's what it gives me :(

OpenStudy (anonymous):

hm, why don't you start at (0,-1) and then go down 3 and go right 2 and put a point, and keep going like that.

OpenStudy (anonymous):

Let me try that and I'll let you know :)

OpenStudy (anonymous):

sure :D

OpenStudy (anonymous):

Like this? lol

OpenStudy (anonymous):

uh, it's kinda wrong because the y-intercept is not exactly on (0,-1)

OpenStudy (anonymous):

if you would push it up it would be ok

OpenStudy (anonymous):

Okay let me try again.. :)

OpenStudy (anonymous):

Better?

OpenStudy (anonymous):

uh well, the y intercept is ok now but the slope is wrong. it should be 2 down and 3 right.

OpenStudy (anonymous):

I think I FINALLY got it right :D Check it one last time please? :)

OpenStudy (anonymous):

yes!!

OpenStudy (anonymous):

YAY :D Finally! Thanks so much for your help! It's oh so appreciated :)

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