Mathematics
LauraMalcolm001:

The image of a triangle after it has been dilated with a center of dilation at the origin has vertices at A prime(12, –6), B prime(–24, –12), and C prime. If the pre-image of B prime, point B, has coordinates of (–18, –9) and the pre-image of C prime, point C, has coordinates of (–13.5, 18), which statements are true? Check all that apply. The coordinates of C prime are (27, 18). The coordinates of C prime are (–18, 24). The scale factor is 1 and one-third. The scale factor is 1 and one-fifth. The scale factor is Three-fourths. The coordinates of A are (16, –8). The coordinates of A are (9, –4.5).

TWALKER16:

Which one do you think it is?

LauraMalcolm001:

Ummm I asked because I don't know, and don't waste my time by using special fonts, and not even helping.

CourtneyWatson:

You can mark out A and F

Mercury:

point B is (–18, –9) point B prime(–24, –12) if we divide the coordinates of B prime / B, we get (-24/-18) we get the scale factor 4/3, or 1 and one third. so that's your scale factor. but we still need to figure out the coordinates of C-prime, as well as point A to get the coordinates of C prime ---> multiply C by (1 and 1/3) to get the coordinates of A ---> divide A prime by (1 and 1/3)