What's the slope and y -intercept of y=3x -7

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

You love to play soccer! you make a shot at the net 8 times during a game! of those 8 attempts, you score twice. what percent of the time did you score?

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'