Answer:
-------> 
-------> 
-----> 
-------> 
-------> 
-------> 
Step-by-step explanation:
we know that
The standard form of a vertical parabola is equal to

where
(h,k) is the vertex
the focus is (h, k + p)
and
the directrix is y = k - p
Part 1) we have

Convert to standard form

The vertex is the point 


the directrix is equal to
----->
Part 2) we have

Convert to standard form

The vertex is the point 


the directrix is equal to
----->
Part 3) we have

Convert to standard form

The vertex is the point 


the directrix is equal to
----->
Part 4) we have

Convert to standard form

The vertex is the point 


the directrix is equal to
----->
Part 5) we have

Convert to standard form

The vertex is the point 


the directrix is equal to
----->
Part 6) we have

Convert to standard form

The vertex is the point 


the directrix is equal to
----->
80% of 4000 is 3200, so 800 disagreed, and 3200 agreed.
I'm fairly sure that the answer is an ecosystom.
If the line does not have a y int, then it means it does not cross the y axis....that means it is a vertical line.....its x int is (3,0)...so this equation for the line is x = 3
if the line does not have an x int, it means it does not cross the x axis...that means it is a horizontal line...its y int is (0,-4)...so the equation for this line is
y = -4