A direct variation function contains the points (2, 14) and (4, 28). Which equation represents the function?
2 answers:
Direct variation mean x =ky so y = x/k
(2,14) mean y = kx so 14 = k*2 so 14 = 7*2 so 14 = 14
(4,28) mean y = kx so 28 = k*4 so 28 = 7*4 so 28 = 28
from these result that the 3rd choice is right sure
y = 7x THIS IS THE ANSEWR
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