13
vhat is
ers
tyra opened a new bag of
birdseed and filled 3 bird
feeders. she put 2,500 grams
of seed into each feeder. there
were 1,500 grams of birdseed
left in the bag. what was the
mass of the bag of birdseed in
kilograms before tyra opened
it?
donna
decora
10 me
needs
how
shed
a 25
ter?
whi

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

the graph on the bottom right

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.