49x - 21y = -1,470

put in slope intercept form

Slope intercept form:

y = mx + b

What we are given:

49x - 21y = -1,470

we need to keep y on the left side so we subtract 49x from both sides;

-49x            -49x

-21y = -49x - 1,470

we need to make y one so we divide by -21 from both sides;

÷-21                ÷-21

y = -49x/-21 - 70

which simplifies to

y = 7x/3 - 70

its definatley   this on your answer choice?

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