How did the graph change between point A and B

What term makes it inconsistent y=2x - 4

Which of the following is the true for f(x) = 5cos

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?