Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Join our live webinar and learn how to approach Data Sufficiency and Critical Reasoning problems, how to identify the best way to solve each question and what most people do wrong.

From Dec 5th onward, American programs will start releasing R1 decisions. Chat Rooms: We have also assigned chat rooms for every school so that applicants can stay in touch and exchange information/update during decision period.

Re: At what point does the line ax + y + b = 0 intersect the y-axis?
[#permalink]

Show Tags

07 Aug 2016, 12:57

2

Top Contributor

1

Bunuel wrote:

At what point does the line ax + y + b = 0 intersect the y-axis?

(1) b = 5 (2) a = 3

Target question:At what point does the line ax + y + b = 0 intersect the y-axis? This is a great candidate for REPHRASING THE TARGET QUESTION

Take the equation of the line ax + y + b = 0, and rewrite it in SLOPE Y-INTERCEPT FORM Given: ax + y + b = 0 Subtract ax and b from both sides to get: y = -ax - b At this point, we can see that the y-intercept is -b (and the slope is -a) So, to determine the y-intercept, we need only determine the value of b REPHRASED target question:What is the value of b?

Statement 1: b = 5 PERFECT!! Since we can answer the REPHRASED target question with certainty, statement 1 is SUFFICIENT

Statement 2: a = 3 We cannot use this information to determine the value of b. Since we cannot answer the REPHRASED target question with certainty, statement 2 is NOT SUFFICIENT

Re: At what point does the line ax + y + b = 0 intersect the y-axis?
[#permalink]

Show Tags

13 Jul 2018, 02:12

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________