Question

Which scenario could NOT be described by the following graph?

A. the altitude of a hiker who climbs up a mountain at a constant rate and then rests at the top of the mountain
B. the speed of a vehicle that accelerates at a constant rate and then reaches and maintains a constant cruising speed
C. the distance that a man is from home if he walks away at a constant rate and then stops for a period of time
D. the total distance a vehicle travels as it goes up a hill and then maintains a constant rate of speed at the top

Answer 1

Answer:

D. the total distance a vehicle travels as it goes up a hill and then maintains a constant rate of speed at the top.

even if the distance increases the graph should rise up.

Answer 2

Answer:

A. the altitude of a hiker who climbs up a mountain at a constant rate and then rests at the top of the mountain.

Step-by-step explanation:

The given graph shows a increasing linear behaviour, then it shows a null behaviour.

So, if the graph is about a hiker, then the first part of it expresses that the hiker climbed up, and then rested, because the horizontal part means that there wasn't any move during that period.

Therefore, the right answer is A.

Remember that in a linear graph, horizontal periods of the line means the absence of any ratio of change, so if variables are time and distance, the horizontal part means that the person didn't move during that period.

Now, if the line increases, means that the person was moving forward, that's  why the right choice is A.