Explain how to determine the slope and y-intercept of a line given its graph.

use the expression rise/run to determine the slope, in order to determine y intercept graph the solution and determine where the line intersects whith the y axis.

Step-by-step explanation:

The polygon that Ethan is in the process of constructing is an equilateral triangle. The correct option among all the options that are given in the question is the second option. The reason behind such a conclusion is that the points are located on the two arcs and to left side of the diameter mark.