Question

Kayla was at the surface of a swimming pool and recorded the following two measurements, in feet, on a number line: −9, which represents the depth of water in the swimming pool +10, which represents the height of the slide at the pool Part A: What does 0 represent in this situation? (3 points) Part B: Describe the height of the slide in relation to 0 in the situation. (3 points) Part C: Kayla held a pole in the swimming pool. The bottom of the pole was at a depth of 3 feet. How should Kayla mark the level of the bottom of the pole on the number line? Explain how you determined this. (4 points)

Answer 1

A) 0 represents the surface of the pool.
B) The height of the pool is 10 above the pool surface
C) It should be -3 since it is going down so it is going to be a negative number and it is also below the pool's surface.

Answer 2

Part A:

0 = the surface of the swimming pool

Part B:

Since the height of the slide is measured at +10 feet, then this means

that the top of the slide is 10 feet above the surface of the water (0) in the swimming pool.

Part C:

Since 3 feet of the pole was put in the water, then Kayla should mark the of the bottom of the pole as -3 feet.