A direct variation function contains the points (-8,6) and (12,9). Which equation represents the function?
Oy=-
O y = - 2 x
y = 2
Oy

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

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47 - 90 = 43

43 - 180 = x

x = 137