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


Hi Brent,

Need your help in the below question:

gmat-admin's picture

Office Hours

Have questions about your preparation or an upcoming test? Need help modifying the Study Plan to meet your unique needs? No problem. Just book a Skype meeting with Brent to discuss these and any other questions you may have. 

Change Playback Speed

You have the option of watching the videos at various speeds (25% faster, 50% faster, etc). To change the playback speed, click the settings icon on the right side of the video status bar.

Have a question about this video?

Post your question in the Comment section below, and a GMAT expert will answer it as fast as humanly possible.

Free “Question of the Day” emails!