There are actually 2 variations in this case.
> First case: the number of sides is an odd number
<span> The number
of lines of symmetry is simply equal to number of sides</span>
> Second case: the number of sides is an even number
<span> The
number of lines of symmetry is equal to twice the number of sides</span>
(x,y)
sub those for x and y and see if you get a true statement
(2,-8)
6(2)+-8=-4
12-8=-4
4=-4
fasle
(2,8)
6(2)+8=4
12+8=4
20=4
false
(1,2)
6(1)+2=4
4+2=4
6=4
false
(1,-10)
6(1)+-10=4
6-10=-4
-4=-4
true
ANSWER IS D
The ? is 1.
7*(9*1)=63
Hope this helps!!