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moosaw500
29.06.2019 •
Mathematics
In a direct variation, y=18 when x=9. write a direct variation equation that shows the relationship between x and y
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Ответ:
y = 2x
Step-by-step explanation:
since x and y vary directly then the equation is
y = kx ← k is the constant of variation
to find k use the given condition y = 18 when x = 9
k =
=
= 2, hence
y = 2x ← is the equation relating x and y
Ответ:
Everything on the left of the 0 is negative and everything to the right of 0 is positive
Step-by-step explanation: