Lesson: Slope y-intercept Form

Comment on Slope y-intercept Form

for the slope, can the negative sign only be applied to one side? in other words, this problem says the slope is - 2/5. you plotted the line by making the slope -2/+5. if you plot the line +2/-5, you get the same line. but if you distribute the negative sign to both the rise and the run, it would be -2/-5, in which the line does not appear as you drew. so, if we have a negative slope, should the negative sign only be applied to either the rise or the run?
gmat-admin's picture

You're correct to say that plotting -2/+5 and 2/-5 will both yield the same slope. This is because -2/+5 = 2/-5 = -(2/5)

And yes, if we have a negative slope, the negative sign should be applied to EITHER the rise or the run.

Likewise, if we have a positive slope, like 3/7, plotting +3/+7 or -3/-7 will yield the same slope. This is because +3/+7 = -3/-7 = 3/7

Cheers,
Brent

Hi Brent,

Need your help in the below question:

https://gmatclub.com/forum/if-the-graph-of-y-x-2-ax-b-passes-through-the-points-139828.html
gmat-admin's picture

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