PLEASE HELP Which characteristics will prove that triangle DEF is a right, scalene triangle?

A. DE, EF, and DF are all different lengths, and their slopes are the same.

B. DE, EF, and DF are all different lengths, and the slopes of DE and EF opposite reciprocals.

If g(x) = x+1/ x-2 and h (x) =4 - x , what is the value of ( g*h) (-3)?

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

Does the point (1, sqrt 7) lie on circle shown.