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MA_775_DIABLO [31]
3 years ago
14

In a direct variation, y=18 when x=9. Write a direct variation equation that shows the relationship between x and y

Mathematics
1 answer:
Jobisdone [24]3 years ago
3 0

Answer:

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 = \frac{y}{x} = \frac{18}{9} = 2, hence

y = 2x ← is the equation relating x and y


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