Represent the temperature in degrees Fahrenheit with a positive or negative number: 2-3/4 degrees below zero

How can you tell when x and y are not directly proportional?

On friday, there were x students at the baseball game. on monday, there were half as many students at the game as there were on friday. on wednesday, there were 32 fewer students at the game as there were on friday. which expression could represent the total number of tickets sold for all 3 games?

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.