BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

Circle C and line K lie in the xy plane.

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 55
Joined: Sun Sep 20, 2009 1:37 pm
by andy123 » Tue Oct 13, 2009 6:06 am
I have a tough time with questions on co-ordinate geometry because I dont know what to look for in the question..pls help!!


This one is from GMAT Prep

Circle C and line K lie in the xy plane. If circle C is centered at the origin and has radius 1 , does line K intersect circle C??

(1) The x intercept of line k is greater than 1
(2) The slope of line K is -1/10

what should be the approach in this case ?

equation or diagram...

another question is it says line K ... can we interpret it as since we do not know that the line is finitie or infinite...thus answer is E ??
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Senior | Next Rank: 100 Posts
Posts: 41
Joined: Tue Oct 06, 2009 9:49 am
Thanked: 4 times

Re: Circle C and line K lie in the xy plane.

by mridul_dave » Tue Oct 13, 2009 7:34 am
andy123 wrote:I have a tough time with questions on co-ordinate geometry because I dont know what to look for in the question..pls help!!


This one is from GMAT Prep

Circle C and line K lie in the xy plane. If circle C is centered at the origin and has radius 1 , does line K intersect circle C??

(1) The x intercept of line k is greater than 1
(2) The slope of line K is -1/10

what should be the approach in this case ?

equation or diagram...

another question is it says line K ... can we interpret it as since we do not know that the line is finitie or infinite...thus answer is E ??

For such simple situations , go with a diagram.
You wont have to solve anything.
If you know the slope of a line and a point that falls on it your line is completely defined, so is circle with center and radius information. So the two statements together can answer this.

I normally assume an infinite line because that is pretty much the assumption in geometry/co-ord.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 91
Joined: Tue Aug 25, 2009 7:50 am
Location: Washington DC
Thanked: 2 times
GMAT Score:600

by ershovici » Tue Oct 13, 2009 7:46 am
Answer is E.
St. 1 - insufficient - we do not know lines's paths.
St. 2 - insufficient - we can have a lot of equoitons and lines that satisfy this statement.
St. 1+2 - again insufficient - we can not get y intercept of the line, so can't answer a question.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 41
Joined: Tue Oct 06, 2009 9:49 am
Thanked: 4 times

by mridul_dave » Tue Oct 13, 2009 10:06 am
ershovici wrote:Answer is E.
St. 1 - insufficient - we do not know lines's paths.
St. 2 - insufficient - we can have a lot of equoitons and lines that satisfy this statement.
St. 1+2 - again insufficient - we can not get y intercept of the line, so can't answer a question.
If you know the slope, you know the Y intercept.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 43
Joined: Tue Oct 13, 2009 3:31 pm

by Talkativetree » Tue Oct 13, 2009 6:08 pm
How would you solve for the y-intercept, when you're not even sure what the line actually looks like?

the X-intercept could be 10, 100, ... n, so that the y-intercept would be 1, 10, ...etc.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1