Zachary purchased a computer for $1,200 on a payment plan. Four months after he purchased the computer, his balance was $780. Five months after he purchased the computer, his balance was $675. What is an equation that models the balance y after x months?
The equation models the balance y after x months.

y = 105x

Step-by-step explanation:

He loses $105 per month

function 2 has a greater rate of change than function 1

function 2 has a greater y-intercept than function 1

step-by-step explanation:

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.