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.

Three of the four vertices of a rectangle in the xy

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Moderator
Posts: 2589
Joined: Sun Oct 15, 2017 1:50 pmFollowed by: 6 members
by BTGmoderatorLU » Wed Oct 10, 2018 2:52 pm

Timer

00:00

Answers

A

B

C

D

E

Stats

Difficulty—

Source: Manhattan Prep

Three of the four vertices of a rectangle in the xy-coordinate plane are (-5,1), (-4,4), and (8,0). What is the fourth vertex?

A. (-4.5, 2.5)
B. (-4, 5)
C. (6, -2)
D. (7, -3)
E. (10, 1)

The OA is D.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
Junior | Next Rank: 30 Posts
Posts: 25
Joined: Mon May 07, 2018 8:47 am
Location: India
GMAT Score:610

by nonplus2 » Wed Oct 10, 2018 9:39 pm
Please refer to the attached figure.

Image

Since the figure is rectangle. The lines BD and DE are perpendicular to each other (Point E is the unknown vertex)

Product of slopes of 2 lines perpendicular to each other is -1
from the figure we have slope of BD = (0 - 4)/(8-(-4)) = -4/12 = -1/3
Hence, Slope of line DE will be = (-1)/(-1/3) = 3
From the figure, we can see that x-coordinate of unknown vertex is positive while y-coordinate is negative. Hence, A, B and E are out

Plugging in C and D to check with which vertex we can obtain slope of 3:
C : (-2-0)/(6-8) = -2/-2 = 1
D: (-3-0)(7-8) = 3

Hence, D is the correct answer
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1