Question 347617
The area, {{{A}}} is the length x height
The line connecting (-3,-1) and (5,-1) is a horizontal line segment
with length {{{5 - (-3) = 8}}} and is {{{1}}} unit below the x-axis
The other pair, (-1,4) and (7,4) also has a length {{{7 - (-1) = 8}}}
and also is horizontal with a height above the x-axis of {{{4}}}
The total distance between the horizontal line segments is {{{4 -(-1) = 5}}}
{{{A =  8*5}}}
{{{A = 40}}} square units