Question

how is it 17 units??

Answer 1

The transformation is:
dilation,a=+2.0
left shift, h=-3
vertical shift = k
so
2x^2+12x+1=a(x-h)^2+k=[2(x-(-3))^2]+k=[2x^2+12x+18]+k
=>
1=18+k
k=1-18=-17  or 17 units down.