anonymous
  • anonymous
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.
Mathematics
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Hello?
anonymous
  • anonymous
@peachpi
anonymous
  • 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. \[x_{length}=\frac{ |x _2-x_1| }{ 4 }\] \[y_{length}=\frac{ |y _2-y_1| }{ 4 }\]

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anonymous
  • anonymous
xlength 5/4 and ylength= 7/5
anonymous
  • anonymous
7/4 for y.
anonymous
  • anonymous
soorry i meant 7/4
anonymous
  • anonymous
and then since you want a 1:3 ratio, add those to point D one time to get F.|dw:1435330209613:dw|
anonymous
  • anonymous
-7/4, 1?
anonymous
  • anonymous
-7/4 is right for x. I got -5/4 for y
anonymous
  • anonymous
-3+7 = 4 , 4/4 = 1?
anonymous
  • anonymous
need common denominator |dw:1435331274155:dw|

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