Prove ABCD is a parallelogram. HINT: Look for two congruent triangles that will allow you to find congruent angles...)

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)

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,