You add 7 to the y coordinates. (x,y+7)
Answer:
Step-by-step explanation:
n²+2n+1 = (n+1)(n+1)
n²-8n-9 = (n+1)(n-9)
the least common denominator for these two rational expressions is :
(n+1)(n-9)
Concentric circles because if a line is tangent to one circle, it would only intersect teh other