Answer:
0
Step-by-step explanation:
The y's are the same so they do not go up or down so the slope is 0.
Answer:
it is the last one
Step-by-step explanation:
We claim that the answer is 
Since the two graphs both open down, and all the answer choices, in addition to the equation of the blue graph, are quadratic polynomials, the leading coefficient must be negative. This immediately rules out answer choices A, B, and C, leaving D as the answer.
