A coordinate plane's x-axis ranges from 0 to 30 by 10-unit increments and its y-axis ranges from 0 to 600 by 200-unit increments. A diagonal line is plotted.
The graph models the descent of a hot air balloon in feet per minute. What does the y-intercept tell you in this situation?
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Responses
The balloon takes 0 minutes to descend 600 feet.
The balloon takes 0 minutes to descend 600 feet.
The balloon starts its descent at 600 feet.
The balloon starts its descent at 600 feet.
The balloon rises 600 feet.
The balloon rises 600 feet.
It will take the balloon 600 minutes to descend.
It will take the balloon 600 minutes to descend.
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1 answer
The correct response is:
The balloon starts its descent at 600 feet.
In a graph that models descent over time, the y-intercept represents the starting height of the balloon when time (x-coordinate) is zero. In this case, a y-intercept of 600 feet indicates that the balloon begins its descent from a height of 600 feet.
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