Solve y-5=2x and does it fit the format of y=kx

Find the vertex of the function given below y=x^2-6x+1

An apartment has a replacement cost of $950,000 and contents valued at $1,450,000. it has a classification of a and a territory rating of 3. find the annual premium a) $10,185 b) $9,230 c) $3,155 d) $13,830

How do you solve a question like this?