If the rate of change for one linear function is positive and for another is negative can they both be either increasing or decreasing explain

  No

Step-by-step explanation:

"Positive rate of change" means "increasing".

"Negative rate of change" means "decreasing".

A linear function cannot have/be both.

correct answer:

a + bi

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