Please help me with this question and show your steps

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression

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

I'm marking the brainliest and it's 15 points