uzumakigrrl247 uzumakigrrl247

04-07-2019
Mathematics

contestada

Geometry:
The vertices of triangle ABC are A(0,9), B(-9,-9), C(9,-9) Find the scale factor if the image of ABC has vertices A'(3,10),B'(-1,2),C'(7,2)

Respuesta :

sqdancefan sqdancefan

04-07-2019

Answer:

4/9

Step-by-step explanation:

The easiest segment to work with is BC, since the y-values are the same for coordinates B and C and for B' and C'.

The length of BC = 9 -(-9) = 18.

The length of B'C' = 7 -(-1) = 8.

The scale factor is B'C'/BC = 8/18 = 4/9.

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