Which equation matches the graph of the greatest integer function given below? ? pleaze

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

He letter p on the number line below represents the number . (use the hyphen for negative numbers and write answer as a decimal, such as –7.2) number line from negative 7 to positive 7 in increments of 0.5 is shown. only the whole numbers are labeled. a point labeled p is placed at the eleventh tick mark to the left of 0.

This question is hard for me to answer can you me. the question is find the value of x.