Question

gahh, can someone please help me.

Answer 1

that was wrong
you could do this by solving \[\frac{y}{20}=\frac{4}{6}\]

Answer 2

if I'm right you would also have to cross multiply those fractions satellite gave you

Answer 3

so 20x4 and 6y.

Answer 4

so 13.3 ?!

and then how would i do it for X then ? (so i can get some practice) - is there a certain way to set up the numbers?

Answer 5

You can see from the graph that the two shapes are proportional [ie similar]

So the first step would be to look at 'y':

You are already given the lengths 4 on the first and 6 on the second

So we know that there is proportionality

So (6/4)=(20/y)
rearranging this you get y=13.3

Do something similar for x
(6/4)=(18/x)
Solve for x

Same for 'z'
(6/4)=(z/8)
Solve for 'z'

The 6/4 in essence gives you the scale factor to which you shape has been stretched

Answer 6

yay, thank you! now i finally understand it!

Answer 7

No problem :)