Aida is attending a trekking camp. She walks from her tent to a hilltop in 2 hours. She has a picnic with her friends on the hilltop for 6 hours. Aida walks back to her tent in 1 hour. Which graph best represents the distance, y, in miles, traveled by Aida for a certain amount of time, x, in hours? A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 2, 4. The second straight line joins ordered pairs 2, 4 and 8, 4. The third straight line joins ordered pairs 8, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 1, 4. The second straight line joins ordered pairs 1, 4 and 8, 4. The third straight line joins ordered pairs 8, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 2, 4. The second straight line joins ordered pairs 2, 4 and 7, 4. The third straight line joins ordered pairs 7, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 1, 4. The second straight line joins ordered pairs 1, 4 and 7, 4. The third straight line joins ordered pairs 7, 4 and 9, 0.

Question

01-08-2017
Mathematics

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Aida is attending a trekking camp. She walks from her tent to a hilltop in 2 hours. She has a picnic with her friends on the hilltop for 6 hours. Aida walks back to her tent in 1 hour. Which graph best represents the distance, y, in miles, traveled by Aida for a certain amount of time, x, in hours? A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 2, 4. The second straight line joins ordered pairs 2, 4 and 8, 4. The third straight line joins ordered pairs 8, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 1, 4. The second straight line joins ordered pairs 1, 4 and 8, 4. The third straight line joins ordered pairs 8, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 2, 4. The second straight line joins ordered pairs 2, 4 and 7, 4. The third straight line joins ordered pairs 7, 4 and 9, 0. A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 1, 4. The second straight line joins ordered pairs 1, 4 and 7, 4. The third straight line joins ordered pairs 7, 4 and 9, 0.

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barnuts barnuts · Answer 1 · 2017-08-15T16:03:08+02:00

The correct answer among the given choices is the first one:

“A graph shows Time in hours on the x-axis and Aida’s Distance from Tent in miles on y-axis. The graph shows three straight lines. The first straight line joins ordered pairs 0, 0 and 2, 4. The second straight line joins ordered pairs 2, 4 and 8, 4. The third straight line joins ordered pairs 8, 4 and 9, 0.”

The given ordered pairs is in the format of (t, d) where t is time and distance is d. Time will always be on the x-axis since it is always an independent variable.

The first ordered pair should be (2, 4) since it took her 2 hours to trek to the hilltop. From the given choices, only the 1st and 3rd choice has this first ordered pairs so we are down to two choices.

Now the second ordered pair should be (8, 4) since she spent 6 hours at the top but no change in distance. And only the 1st choice has this value therefore it is the answer.