How do you solve the system of equations 8x-9y=15 and −x+4y=1 by combining the equations.

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

i think it would be c

mark brainliest if im right

step-by-step explanation:

it goes right

yeah i know the problem you need. i am taking it right now. the answer is step 3

~mickey