urfavgringo
10.12.2019 •
Mathematics
Pls ! will give brainlist’
find an equation of direction variation, given that y varies directly with x and y is 39 when x is 3.
a. y = 42x
b. y = 1/13x
c. y = 117x
d. y = 13x
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Ответ:
D) y = 13 x
Step-by-step explanation:
y varies directly to x that is
y∝x
y= k x
where k is constant
k = y/x
if y = 39 and x= 3 then putting values we get
k = 39 / 3
k = 13
putting values of k in the equation where y = kx
y = 13 x
Ответ:
What's the intervals for this question
Step-by-step explanation: