How fast is a teacher walking if they go 40 meters in 20 seconds

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need

The holiday party will cost $160 if 8 people attend. if there are 40 people who attend the party, how much will the holiday party cost