Coefficient: a number that multiplies a variable.

find a coefficient of x in –7x, and a coefficient of y in y.

The coefficient of X would be the -7 because you are multiplying x by -7.

Because Y is by itself, there is no coefficient, but some people would say the coefficient is 1 because any number/ variable multiplied by one remains the same.

i believe the correct answer is b.

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.