(-5, 4)
You can get this by finding the vertex at -b/2a for x value and plugging in to find the y value.
Answer:
Therefore the required rule for the given table is

Step-by-step explanation:
Given :
Table values are
x y
6 -12
7 -14
8 -16
9 -18
10 -20
To Find :
The rule for above result = ?
Solution:
The Required Rule for the above Table is

For first case
Put x = 6 in the rule we get
as shown in the table
For second case
Put x = 7 in the rule we get
as shown in the table
For third case
Put x = 8 in the rule we get
as shown in the table
For fourth case
Put x = 9 in the rule we get
as shown in the table
For fifth case
Put x = 10 in the rule we get
as shown in the table
Therefore the required rule for the given table is

1\2-1\8= get the lcm of 2 8=8
(8\2+1=5)(8\8+1=1)
5\8-1\8=4\8=1\2