Using linear function concepts, it is found that consumption would increase by $800.
A linear function is modeled by:
[tex]y = mx + b[/tex]
In which:
In this problem, the function is given by:
C = 200 + 0.8Y.
Which means that the slope is of m = 0.8 per unit of Y.
For 1000 units:
0.8 x 1000 = 800.
Consumption would increase by $800.
More can be learned about linear function concepts at https://brainly.com/question/24808124