William is in the middle of swimming in a ten-mile race. He swims at a steady speed, and then slows down, stops to eat, swims faster to get back in the race, and returns to a steady speed. He later stops for water, and then again swims faster to get back in the race. Which graph best represents the situation?
Answer
A
Image with description On a first quadrant graph, the horizontal axis is labeled time and the vertical axis is labeled speed. From left to right, the graph begins about 3 fifths of the way up the vertical axis, moves to a point that is 2 tenths of the way across the horizontal axis and 3 fifths of the way up the vertical axis, moves to a point that is 3 tenths of the way across the horizontal axis, moves to a point that is 4 tenths of the way across the horizontal axis, moves to a point that is 5 tenths of the way across the horizontal axis and 3 fifths of the way up the vertical axis, moves to a point that is 6 tenths of the way across the horizontal axis, moves to a point that is 8 tenths of the way across the horizontal axis, and ends at a point that that is nine tenths of the way across the horizontal axis and is 3 fifths of the way up the vertical axis.
B
Image with description On a first quadrant graph, the horizontal axis is labeled time and the vertical axis is labeled speed. From left to right, the graph begins about 3 fifths of the way up the vertical axis, moves to a point that is 2 tenths of the way across the horizontal axis, moves to a point that is 3 tenths of the way across the horizontal axis, moves to a point that is 4 tenths of the way across the horizontal axis and 3 fifths of the way up the vertical axis, moves to a point that is 5 tenths of the way across the horizontal axis and 3 fifths of the way up the vertical axis, moves to a point that is 7 tenths of the way across the horizontal axis, moves to a point that is 8 tenths of the way across the horizontal axis, and ends at a point that that is 9 tenths of the way across the horizontal axis and 3 fifths of the way up the vertical axis.
C
Image with description On a first quadrant graph, the horizontal axis is labeled time and the vertical axis is labeled speed. From left to right, the graph begins about 3 fifths of the way up the vertical axis, moves to a point that is 2 tenths of the way across the horizontal axis and 3 fifths of the way up the vertical axis, moves to a point that is 3 tenths of the way across the horizontal axis, moves to a point that is 4 tenths of the way across the horizontal axis, moves to a point that is 5 tenths of the way across the horizontal axis and 3 fifths of the way up the vertical axis, moves to a point that is 7 tenths of the way across the horizontal axis and 3 fifths of the way up the vertical axis, moves to a point that is 8 tenths of the way across the horizontal axis, moves to a point that is 9 tenths of the way across the horizontal axis, and ends at a point that that is at the end of the horizontal axis and is 3 fifths of the way up the vertical axis.
D
Image with description On a first quadrant graph, the horizontal axis is labeled time and the vertical axis is labeled speed. From left to right, the graph begins about 3 fifths of the way up the vertical axis, moves to a point that is 2 tenths of the way across the horizontal axis and 3 fifths of the way up the vertical axis, moves to a point that is 4 tenths of the way across the horizontal axis, moves to a point that is 5 tenths of the way across the horizontal axis, moves to a point that is 6 tenths of the way across the horizontal axis and 3 fifths of the way up the vertical axis, and ends at a point that that is at the end of the horizontal axis and is 3 fifths of the way up the vertical axis.