I need some help on these slope/linear graphs multiple choice equations.

Explain how you got your answer. Please and thank you.

(Ignore my previous question for I did not provide a picture of the question)

Use set builder notation to represent the following set: { -3, -2, -1, 0}

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.