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## anonymous one year ago On Line DE D = (-3,-3) and E (2,4). Find point F on line DE so that DF and EF form a 1:3 ratio.

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1. anonymous

Hello?

2. anonymous

@peachpi

3. anonymous

1:3 ratio means there are 4 segments on the line (1 + 3 = 4). Start by finding the "length" of each segment in x an y. $x_{length}=\frac{ |x _2-x_1| }{ 4 }$ $y_{length}=\frac{ |y _2-y_1| }{ 4 }$

4. anonymous

xlength 5/4 and ylength= 7/5

5. anonymous

7/4 for y.

6. anonymous

soorry i meant 7/4

7. anonymous

and then since you want a 1:3 ratio, add those to point D one time to get F.|dw:1435330209613:dw|

8. anonymous

-7/4, 1?

9. anonymous

-7/4 is right for x. I got -5/4 for y

10. anonymous

-3+7 = 4 , 4/4 = 1?

11. anonymous

need common denominator |dw:1435331274155:dw|

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