Question

Write the first ten terms of a sequence whose first term is -10 and whose common difference is -2.

Answer 1

Add the common difference to a term to get the next term.
-10
-10 + (-2) = -12
-12 + (-2) = -14
etc.

The sequence is
-10, -12, -14, -16, -18, -20, -22, -24, -26, -28