Questions
Amy is riding a cable car to a lodge. Her distance from the lodge is recorded from the start of the ride to the end.
Let y be the distance (in meters) from the lodge and let x be the amount of time (in seconds) since the ride started. The equation y=-5x+600 models y as a function of x . As shown in the graph below, this model is accurate only from the start of the ride until the end. (The endpoints of the graph show when the ride starts and ends.)
Distance from the lodge (meters)
Amount of time (seconds)
Use the graph to complete each part.
(a)
Amy is
She is
Each value in the
range
is a distance from the lodge.
(b)
Amy starts the ride when the amount of time is
She continues riding until the amount of time is
Each value in the
(Choose one)
is an amount of time since the ride started.
(a) Amy is riding a cable car to the lodge.
She is recorded as being a certain distance from the lodge at different times during the ride.
Each value in the range is a distance from the lodge.
(b) Amy starts the ride when the amount of time is 0.
She continues riding until the amount of time is 120 seconds.
Each value in the domain is an amount of time since the ride started.