Answer:
The vertex is the point 
Step-by-step explanation:
we have

we know ow that
The equation of a vertical parabola into vertex form is equal to

where
(h,k) is the vertex of the parabola
Convert the equation into vertex form
Group terms that contain the same variable, and move the constant to the opposite side of the equation

Factor the leading coefficient

Complete the square. Remember to balance the equation by adding the same constants to each side


Rewrite as perfect squares

therefore
the vertex is the point 
Probably a for plot, because It shows how close each value is, or if the values are all scattered around. it gives you a more accurate ways of seeing how close the data is. hope this helped
Good morning ☕️
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Step-by-step explanation:
Look at the photo below for the details.
Answer:
if the question is (6x+4y) - 2y
6x+2y or 3x+y
but if its (6x+4y)(-2y)
-6xy+(-8y)
Step-by-step explanation: