Also, you must use brackets in the correct places, since x + 4/5 is , while (x + 4)/5 is
Assuming that you had made these changes, part A would be correct. Why don't you think it's right?
For B, why are you expanding (incorrectly btw)? To find x intercepts, let y = 0. To find y intercepts, let x = 0.
Since it's already factorised you can apply the null factor law once you have let y = 0.
For C, first of all we don't like swearing, even if it is censored. Then, what do you know about functions? Do you understand that a function is a mapping of two numbers, and works like a computer program, with numbers going in (the Independent Variable, usually x), and each number going in getting a number coming out (the Dependent Variable, usually y)? Therefore, a relation can only be a function if each number going in only has ONE possible value coming out. What could you do if your function is giving you multiple values for the Dependent Variable for particular values of the Independent Variable?
For D, you are almost correct. It's actually translated 1 to the left, not 1 upward.
For E, how can you write that function to take into account its transformations?