Answer:
A parabola has the form:
y = a*x^2 + b*x + c
Where a is the leading coefficient.
If a is positive, the parabola opens up.
If a is negative, the parabola opens down.
a is the factor that multiplies the part that grows the fastest in the equation, thus, if a is a larger value (in absolute value) then the parabola will grow faster (then the parabola will be narrow)
if a is smaller (again, in absolute value) the parabola will grow slower, then the parabola will be wider.
With this, we can conclude that:
a = -4
is the largest value of a in absolute value.
Then this corresponds to the thinner parabola (the one at the left)
a = -1
Is the middle value of a, then this corresponds to the graph of the middle
a = -0.25
Is the smallest absolute value of a, then this one corresponds to the widest graph (the first one at the left)
A rotation will interchange the (x,y) coordinates to (y, -x)
So the 3 points are transformed from
D(3,2) to D'(2,-3)
E(4,5) to E'(5,-4)
F(2,3) to F'(3,-2)
Now if you reflect these across the x axis only the y value is affected.
D'(2,-3) to D"(2,3)
E'(5,-4) to E"(5,4)
F'(3,-2) to F"(3,2)
Which is none of your answers. That's one of the reasons it has taken me so long to answer. I'm going to have someone I really trust check what I've done, but I think the question is incorrect. If I am wrong, he has the power to allow me to edit.
Answer:
1
Step-by-step explanation:
Remember that 
Plug it in:
9. I assume the outlier is the asterisk, which appears to be around 4. An outlier is a piece of data that is far from other values.
10. 50%. The definition of the median is that half of the values are above it, and half are below.
Any questions?
Answer:
a = 8
Bottom and top length are 68
left and right are 28
Step-by-step explanation:
6a + 20 = a + 60 (same length do to the little tick marks)
5a = 40 (subtract 1a from both sides and 20 from both sides)
a = 8 (Divide)
