Question

Will star and fan for help! Need help on my practices test!

Answer 1

Triangle PQR with vertices P(3, −6), Q(6, −9), and R(−15, 3) is dilated by a scale factor of 3 to obtain triangle P′Q′R′. Which statement best describes triangle P′Q′R′?

It is similar to triangle PQR and has coordinates P′(1, −2), Q′(2, −3), and R′(−5, 1).
It is congruent to triangle PQR and has coordinates P′(1, −2), Q′(2, −3), and R′(−5, 1). It is similar to triangle PQR and has coordinates P′(9, −18), Q′(18, −27), and R′(−45, 9). It is congruent to triangle PQR and has coordinates P′(9, −18), Q′(18, −27), and R′(−45, 9).

Answer 2

Since it was dilated, we know that it is similar, and not congruent, so we can eliminate B and D.

Answer 3

Also, it was dilated by a scale factor of 3, which means it will be 3 times bigger.

Answer 4

So which should be the answer?

Answer 5

I think it might be C. But I don't really know.

Answer 6

Since it will be three times bigger as the original figure, you would simply multiply 3 to all the x and y-values.

So we will multiply 3 to all these numbers: P(3, −6), Q(6, −9), and R(−15, 3).

Can you multiply 3 to all of those?

Answer 7

@Naruko885

Answer 8

yeah give me a moment.

Answer 9

-18 -54 -45 I think?

Answer 10

x and y values

Answer 11

For example, first one will be (9, -18). Can you do the rest?

Answer 12

@Naruko885

Answer 13

Oh I got it so its A right!!

Answer 14

no

Answer 15

@Naruko885 How did you get A???

Answer 16

Oh sorry my computer used spell check I said C. sorry.

Answer 17

Yep.