Please help me with this math problem

Y = x + 2.

Start off with the linear formula — y = mx + b

M is the slope find the slope by putting rise over run. In this case it is 5 as the rise and 5 as the run. This means 5(rise)/5(run) which is equivalent to 1. M is 1

B is the y intercept. In this case it is 2

You don’t have to show 1 as the slope because anything multiplied by one is itself so just get rid of the m and keep the x.

This leaves you with y = x + 2

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.