Which expression has the same value as the one below?
i dont kown cause i cant see the choices
Answer:
Yes!
Step-by-step explanation:
first you need two points (x,y) (x,y). 
is the formula you would follow to get the slope. Say you have (2,4) (3,-7) You would plug it into the formula and get 
. This example you can simplify it into -11. hope that kinda helps.
Step-by-step explanation:
the function actually is
y = 40(x - 1) + 70 = 40x - 40 + 70 = 40x + 30
still, the slope (the factor of x) is 40.
that means y (the cost) increases by 40 for every additional hour (x increases by 1).
so, the rate of change (slope) is 40/1 = $40 per hour.
