Speed = Distance/Time
Runner Speed = 200/21.3 = 9.4 m/s
Swimmer Speed = 1.8 m/s
9.4 - 1.8 = 7.6 m/s
C
A line segment is part of a line that has two endpoints and contains every point between its endpoints. A ray is a line that has one endpoint and continues infinitely in the other direction.
Answer:
21/2 or 10.5
Step-by-step explanation:
Here it is:
The first set has (0,1) and (0,5), which assigns to the *same* x, more than one value of *y*. That's not a function. It's a curve. Think about a circle, or instance. It's NOT a function, but it's a curve.
The second one has for each *x* a single *y*
BTW, there's no problem if for *different* x there is the same *y*:
y = 5,
all x, have the same y, equal to 5. That's a function, or y = x^2, etc
