C. If the first coefficient is negative, then the graph opens downwards
There is not enough information in the question for their to be an accurate answer.
Dividing 5x+4 by x requires dividing each term of 5x+4 by x:
5x
----
5
Next step: divide 4 by x
Final answer: 5 + 4/x
Sounds as tho' there were a number of answer choices. Next time, please share the answer choices. Thanks.