The equation of a line containing one leg of a right triangle is y = −4x. Which of the following equations could represent the line containing the other leg of this triangle

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Combine like terms to make a simpler expression 3z+z