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Mathematics 17 Online
OpenStudy (anonymous):

Which of the following equations is parallel to the line passing through A(−2, 7), B(−2, −2)? (1 point)

OpenStudy (anonymous):

OpenStudy (anonymous):

Well first you would have to figure out what the slope is, because parallel lines have the same slope but different y intercepts. Can you do that?

OpenStudy (anonymous):

no >.< @halorazer

OpenStudy (anonymous):

You can turn points into a slope by doing the equation y2-y1/x2-x1 So your points are -2,7 and -2,-2. Are you able to figure out the slope with that information?

OpenStudy (anonymous):

-2 ?

OpenStudy (nirmalnema):

equation of the line formed by given points is,, (y-y1)=m(x-x1) m = (y2-y1) / (x2-x1) m=not defined y+2=0 so y=-2

OpenStudy (anonymous):

I have to disagree on your result sir. it's asking for a line parallel to it. Not the same line itself?

OpenStudy (anonymous):

i know that the line is undefined, however the end result should be a number other than -2?

OpenStudy (nirmalnema):

yup you r correct but when i told i have given the required equation.. i have mentioned there line passing through given point...n waiting for further response that does the user understand this or not.

OpenStudy (anonymous):

It can't be y=-2, because all y values would be -2 in the case. (-2,7), does not follow that

OpenStudy (anonymous):

The slope is undefined. The answer should be x=-2, not y=-2 @halorazer

OpenStudy (anonymous):

Don't know why that isn't a choice, though

OpenStudy (anonymous):

That was what I was thinking as well but I figured that I was wrong because it isn't on the list of answers.

OpenStudy (anonymous):

You're not wrong, maybe it is a typo on the answer box.

OpenStudy (triciaal):

slope 7-(-2)/-2-(-2) = 9/0

OpenStudy (triciaal):

for the given equation x =-2 from the choice of answers option 3 is the only one for which x = a constant.

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