SOLUTION: What is the area of a quadrilateral with vertices at (-3,-1), (-1,4) ,(7,4), and (5,-1) ? A 50 units^2 B 45 units^2 C 8sqrt(29) units^2 D 40 units^2

Question 347617: What is the area of a quadrilateral with vertices at (-3,-1), (-1,4) ,(7,4), and (5,-1) ?
A 50 units^2 B 45 units^2 C 8sqrt(29) units^2 D 40 units^2
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The area, is the length x height
The line connecting (-3,-1) and (5,-1) is a horizontal line segment
with length and is unit below the x-axis
The other pair, (-1,4) and (7,4) also has a length
and also is horizontal with a height above the x-axis of
The total distance between the horizontal line segments is

square units
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