I am doing online class and I am looking for a little help please

Which of the following properties can be used to show

Adriana sold 50 shares of a company’s stock through a broker. the price per share on that day was $22.98. the broker charged her a 0.75% commission. what was adriana’s real return after deducting the broker’s commission? a. $8.62 b. $229.80 c. $1,140.38 d. $1,149.00

What is the slope of the line that contains the points (-2,1) and (0,-3)