First off, let's take a peek at y-8=3(x-10), which is already in point-slope form
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so, it has a slope of 3, so a line perpendicular to that one, will have a negative reciprocal slope to that,
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so we're really looking for the equation of a line whose slope is -1/3 and runs through -2,7.
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I'm assuming you meant wins to losses.
To set up this ratio, put the wins on top and the losses on bottom.
Wins 23
Losses 8
It can not be simplified any further because 23 is a prime number (a number that can only be divided by 1 and itself evenly).
I hope this helped
you can reason this concretely.
suppose you start with 60 bugs.
1/5 of the 60 bugs is 12 bugs
divide 12 bugs into 3 equal groups. each group has 12/3 = 4 bugs.
the fraction now is 4/60
in lowest terms this is 1/15
100 miles an hour is the unit rate