Given the equation of the function:
The given function represents a parabola
We will make a complete square to find the coordinates of the vertex
The coefficient of x = 4
Half the coefficient of x = 2
Square it give = 4
So, we will add and subtract 4
Compare the last equation with the vertex form of the parabola
So, h = -2, k = -11
So, the answer will be the coordinates of the vertex = (-2, -11)
Using linear function concepts, it is found that consumption would increase by $800.
<h3>What is a linear function?</h3>A linear function is modeled by:
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 brainly.com/question/24808124