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Coordinate Geometry - Points

SOURCE:GMAT
Number of Problems: 5.
FOR PRINT ::: (Book)

Problem Num : 1
Type:
Topic:Coordinate Geometry 
Theme:None
Adjustment# :
Difficulty: 1

Category Points
Analysis Use common sense
Solution/Hint


Problem Num : 2
Type:
Topic:Coordinate Geometry 
Theme:None
Adjustment# :
Difficulty: 3

Category Points
Analysis
Solution/Hint


Problem Num : 3
Type: Mathematical Reading
Topic:Coordinate Geometry 
Theme:None
Adjustment# : 0
Difficulty: 500 level

Category Points
Analysis
Solution/Hint


Problem Num : 4
Type: Understanding
Topic:Coordinate Geometry 
Theme:None
Adjustment# : 0
Difficulty: 600 level

Category Points
Analysis Don't need to calculate anything.
Solution/Hint


Problem Num : 5
Type: Mathematical Reading
Topic:Coordinate Geometry 
Theme:None
Adjustment# : 6
Difficulty: 600 level

Category Points
Analysis Lets find the mid-point first. Its like finding average between -8 and 20.
Solution/Hint AC= 28 and BD =28. Therefore, y coordinate of B is 28. and the D is the mid point of A and C, which is (20-8)/2 =6.