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

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

Gmatprep coordinate geometry

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 80
Joined: Fri Apr 13, 2007 7:02 am
Location: Long Island
by maolivie » Thu Jul 05, 2007 6:00 pm
On the X-Y plane, at what two points does the graph of y=(x+a)(x+b), intersect the x-axis

1)a+b=-1
2)the graph intersects the y-axis at (0,-6)

OA is C (highlight)
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 277
Joined: Sun Jun 17, 2007 2:51 pmFollowed by: 1 member
Location: New York, NY
Thanked: 6 times

Re: Gmatprep coordinate geometry

by givemeanid » Thu Jul 05, 2007 6:18 pm
maolivie wrote:On the X-Y plane, at what two points does the graph of y=(x+a)(x+b), intersect the x-axis

1)a+b=-1
2)the graph intersects the y-axis at (0,-6)

OA is C (highlight)

y = (x+a)*(x+b)
The graph intersects the x-axis at y = 0.
So, we need to find solution for (x+a)(x+b) = 0 OR in other words, we need to find a and b.

(1) a+b = -1
One equation, two unknowns.
NOT SUFFICIENT.

(2) y-intercept is (0, -6). Since this is a point on the graph,
-6 = (0+a)(0+b)
ab = -6
One equation, two unknowns.
NOT SUFFICIENT.


Taking both together, we have two equations and two unknowns. SUFFICIENT.
Answer is C.
So It Goes
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 80
Joined: Fri Apr 13, 2007 7:02 am
Location: Long Island

by maolivie » Thu Jul 05, 2007 6:49 pm
thanks givemeanid. I never thought on that wavelength for this problem (where if it lies on the x axis, y naturally is 0). That solved a ton of problems.

Thanks again
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1