Answer:
(1,3)
Step-by-step explanation:
The given function is
Factor 2 from the first two terms
Add and subtract the square of half the coefficient of x.
Let us create perfect square trinomial
This implies that:
Therefore the vertex is (1,3).
We got this by comparing to
Answer:
The initial value of the function is 25 and the rate of change is - 5.
Step-by-step explanation:
The table gives the ordered pairs of linear relation and they are (1,20) and (3,10).
Now, the equation of the linear relation that includes those ordered pairs will be
⇒ y - 10 = - 5(x - 3)
⇒ y - 10 = - 5x + 15
⇒ y = - 5x + 25
Therefore, the initial value of the function is 25 and the rate of change is - 5. (Answer)