What is the slope helppp please:)

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

Are the corresponding angles congruent? explain why or why not.