Consider the relation y = −8|x + 3| − 9. what are the coordinates of the vertex? (−3, 9) (−3, −9) (3, −9) (3, 9)

By simple substitution on the left side and on the right side of the given equation, we have to
 For coordinates (-3,-9)
 -9=−8|-3+3|−9
 -9=−8|0|−9
 -9=−9
 Therefore, it is demonstrated that the coordinates of the vertex is
 (-3,-9)

The answers are 20,30,80,180,960,890,1230,4560. on the first row