Please help me my one sub is also not please do one sub

What is the vertical asymptotes of the function f(x)=x-2/x*2-3x-4

Choose a second initial value that is 0.01 greater than the initial value from question 9. iterate it using the function, f, ten times. if necessary, you can round your results to the nearest ten-thousandth.

Does the point (1, sqrt 7) lie on circle shown.