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Mathematics 20 Online
OpenStudy (anonymous):

Which of the following equations has this graph? http://aventalearning.com/content168staging/2006AlgebraIA/exams/4-EXAM4/graph_100.gif y = 1/2x - 3 y = 3x - 2 y = -1/2 x + 3 y = -2x +3

OpenStudy (anonymous):

what one do you think?

OpenStudy (anonymous):

B?

OpenStudy (anonymous):

The line is going down wards so that tells us the slope is a negative. Does B have a negative slope?

OpenStudy (anonymous):

no

sammixboo (sammixboo):

Good explanation, MDoodle. So now we know the answer is not B and MDoodler gave you a big hint as well :)

OpenStudy (anonymous):

Now, since we know the slope is a negative that tells us it is either C or D

sammixboo (sammixboo):

Correcto

OpenStudy (anonymous):

D

OpenStudy (anonymous):

From the y intercept, which is (0, 3) or 3 we can use that point and use our slope to find the answer Lets look at C, from the points (0,3) lets use our slope -rise/run -1/2 from (0,3) go down one and over 2? and keep doing that. Does each point fall on the line?

OpenStudy (anonymous):

ahh i c so it C

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

YW

OpenStudy (anonymous):

cuould you help me with one more

OpenStudy (anonymous):

I would but I am at work and trying to rap up a few things. It is best if you post a new question.

OpenStudy (anonymous):

alirght thanks again

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