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ThePotato381
14.07.2019 •
Mathematics
Parallelogram fghi on the coordinate plane below represents the drawing of a horse trail through a local park: quadrilateral fghi is shown on the coordinate plane with coordinates f at −6, −1; g at −1, −1; h at −2, −4; and i −7, −4. point a is at 3, 8 and point d is at 1, 2. in order to build a scale model of the trail, the drawing is enlarged as parallelogram abcd on the coordinate plane. if two corners of the trail are at point a (3, 8) and point d (1, 2), what is another point that could represent point b? (10, 8) (13, 8) (8, 8) (6, 8)
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Ответ:
we know that
Parallelogram is a quadrilateral with opposite sides parallel and equal in length
so
we have
Step 1
Find the distance FI
we know that
the distance between two points is equal to the formula
substitute the values
Step 2
Find the distance FG
we know that
the distance between two points is equal to the formula
substitute the values
Step 3
Find the distance AD
we know that
the distance between two points is equal to the formula
substitute the values
Step 4
Find the scale factor
we know that
the scale factor is equal to
we have
substitute the values
Step 5
Find the coordinate of point B
we know that
the length side of the segment AB is equal to
we have
substitutes
the x-coordinate of point B is equal to the x-coordinate of point A plus the distance AB
where
Bx------> is the x-coordinate of point B
Ax-------> is the x-coordinate of point A
dAB------> distance AB
susbtitute
the y-coordinate of point B is equal to the y-coordinate of point A
therefore
the coordinate of point B is![(13,8)](/tpl/images/0087/1727/d2d70.png)
the answer is the option
Ответ:
7m+31
9x+18 20+4x
13x+38