The sum of three consecutive integers is -27. what are the numbers?

{-10, -9, -8}
{-5. -9, -13}
{-7, -9, -11}
{-11, -13, -15}

Identify reflection rule on a coordinate plane that verifies that triangle a(-1,7), b(6,5), c(-2,2) and a’(-1,-7), b(6,-5), c’(-2,2) triangle are congruent when reflected over the x-axis