How do you solve this using the quadratic formula? can you explain ?

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?