Question

what about this one for dilation i thought you just doubled it
A triangle has side lengths of 12, 15 and 9. A dilation could result in a triangle with which of the following side lengths?
Select one:
a. 4, 7 and 1
b. 2, 3 and 3
c. 24, 30 and 20 Incorrect
d. 4, 5 and 3

Answer 1

not quite.

for a dilation, you can multiply each side or divide each side by the same number. it doesn't necessarily have to be 2

hint: divide each of the sides by 3

Answer 2

D

Answer 3

good

Answer 4

thanks! ^^

Answer 5

Can you help me with this one
A triangle with vertices at (1, 2), (–1, –6) and (7, –2) is translated five units to the left and 7 units upward. The coordinates of the translated triangle are:
Select one:
a. (6, 9), (4, 1) and (12, 5)
b. (–4, –5), (–6, –13) and (2, –9)
c. (6, –5), (4, –13) and (12, –9)
d. (–4, 9), (–6, 1) and (2, 5) Incorrect i moved them and it got D but it was wrong ?: / @Vocaloid

Answer 6

start with the x-coordinates

subtract 5 from each x-coordinate first

Answer 7

then add 7 to each y-coordinate

Answer 8

okay hold on

Answer 9

actually your answer seems right to me, that's odd

Answer 10

(-4,-3) , (-6,-11) , (2,-7) those are all just -5

Answer 11

im confsued