Answer:

With the vertex 
We see that b = -10 and a = 2 and then the vertes wuld be:

And the best option is:
b. (-10,2)
Step-by-step explanation:
For this problem we have the following function:

And if we compare this expression with the general expression for a parabola given by:

With the vertex 
We see that b = -10 and a = 2 and then the vertes wuld be:

And the best option is:
b. (-10,2)
DF=14. Because DE is half the line and EF is the other half the line you add up both the lengths to get the length of whole line.
DE=EF. DE and EF both equal 7 so they are equal.
Answer:
c=(ay-2)/m
Step-by-step explanation:
Isolate c
First I would multiply both sides by y
mc+2=ay
Then I would subtract 2
mc=ay-2
Then I can divide my m to get c alone
c=(ay-2)/m
Using a graph tool
see the attached figure
the answer is the option
<span>a 90° clockwise rotation</span>