It costs $4 to become a member at a movie rental store and $3 to rent a movie. Let C represent your total cost for movies for the ﬁrst month. Let x represent the number of movies you rent. Write the equation representing the cost. Plot points for your cost if you rent 1, 2, 3, 4, 5 or 6 movies. Then draw a line through the points. a) Find the slope of that line.
b) Find the C-intercept of a line.