May someone help me find the increasing and decreasing ??

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

Find the value of x for which line a is parallel to line b