1 The graph of the linear function y = f(x)
passes through the points (1, 2) and
(5, -1). What is the rate of change of y
with respect to x?
4
A
с
3
4
3
3
B
mit
D
wie
4

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x

it's undefined because anything multiplied by 0 is 0. that said, 7 days is 168 hours

is there more info provided? there is not enough information given in the problem