Question

help!?! Find the scale factor, t.

Answer 1

The ratio of the areas: image/preimage is 1/4. But area is a 2 dimensional value. Conveniently, the figure is a trapezoid which means that for any scale in 1 dimension, that factor squared is applied in 2 dimensions. That's to say if you double all lengths, you get four times the area; if you triple, you get nine times the area, etc...

Since the ratio is 1/4, the linear transformation in length is 1/2.

Answer 2

So 0.25?

Answer 3

sorry I'm a bit rusty on this

Answer 4

@khoala4pham

Answer 5

If I am assuming correctly, the scale factor t is the scale factor of the length of each side. so i concluded t = 1/2. if the scale factor is for the area, then t = 1/4.

Answer 6

so what choice would that be? I don't see 1/4 @khoala4pham

Answer 7

1/4 is 0.25. This is ambiguous--only you know what t is asking for.