## cupcakelover2222 one year ago Find the x value for point F such that DF and EF form a 1:3 ratio. 0.75 −1 2 −1.75

1. cupcakelover2222

2. myininaya

so you know distance formula will be involved? and you want one distance to be 3 times the other, right?

3. cupcakelover2222

I'm guessing so! :) @myininaya

4. myininaya

great can you set the equation then?

5. cupcakelover2222

6. cupcakelover2222

$\sqrt{(2-(-3)^{2}+(4-(-3)^{2}}$

7. cupcakelover2222

Is this correct? @myininaya

8. myininaya

ok we have this line |dw:1402446909617:dw| we want the distance from E to F be equal 3 times the distance from D to F You should have an equation here I just called F (x,y) since we don't know it yet and we are looking for that value x

9. cupcakelover2222

yes I understand so far!

10. cupcakelover2222

@myininaya

11. cupcakelover2222

@jdoe0001

12. myininaya

ok try making an equation from that sentence

13. cupcakelover2222

I am not sure on how to do this which is why I asked for help..@myininaya

14. myininaya

I'm asking you to translate "the distance from E to F" is "3 times the distance from D to F"

15. myininaya

replace the word is with an equal sign replace the distance from E to F with the distance formula and the points entered from E and F and do the same thing from D to F (which is on the other side of equation because it is on the other side of the is)