The graph models the descent of a hot air balloon in feet per minute. What does the y-intercept tell you in this situation?
(1 point)
Responses
The balloon rises 600 feet.
The balloon rises 600 feet.
The balloon starts its descent at 600 feet.
The balloon starts its descent at 600 feet.
The balloon takes 0 minutes to descend 600 feet.
The balloon takes 0 minutes to descend 600 feet.
It will take the balloon 600 minutes to descend.
1 answer
The y-intercept of a graph represents the value of the dependent variable (in this case, the height of the balloon) when the independent variable (time) is zero. Thus, the y-intercept in this situation indicates the starting height of the balloon at the moment it begins its descent.
So the correct response is:
The balloon starts its descent at 600 feet.
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