Which equation does the graph below represent?

A coordinate grid is shown. The x axis values are from negative 10 to positive 10 in increments of 2 for each grid line, and the y axis values are from negative 5 to positive 5 in increments of 1 for each grid line. A line is shown passing through the ordered pairs negative 8, negative 4 and 0, 0 and 8, 4.

y = 2x
y = fraction 1 over 2x
y = fraction 1 over 2 + x
y = 2 + x

What is the question ehre

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.