Answer:
a = - 
, b = - 
Step-by-step explanation:
To obtain the required form use the method of completing the square
add/ subtract ( half the coefficient of the x- term)² to x² - 9x
y = x² + 2(- )x + 
- + 14
= (x - )² - + 
= (x - )²- ← in the form (x + a)² + b
with a = - and b = -
At least means that at the lowest or smallest amount, it is that number, which is 4. So, the equation for this would be n≥4
The formulas are already given, all you have to do is plot them each separately and you will find that they crooks each other, the point of intersection is your solution.
