Tammy did a survey to answer the following question: What is the average reading score of grade 6 students?

The mean reading score was 4.5 points. If all the students scored the same, what would be the reading score of each student?
4.5 points
Less than 4.5 points
Greater than 4.5 points
Cannot be determined

the answer to the question is a  

it has the same slope and the same y-intercept.

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.