Podaj wzor proporcjonalnosci odwrotnej y=a/x, do której wykresu należy punkt P(4/3,3).
P = (4/3 , 3)
x = 4/3 , y=3
więc:
3 = a/(4/3) /* 4/3
3 * 4/3 = a
a=4
y = 4/x
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P = (4/3 , 3)
x = 4/3 , y=3
więc:
3 = a/(4/3) /* 4/3
3 * 4/3 = a
a=4
więc:
y = 4/x