Answers:
1. Linear
2. It is a function
3. 10 ft
4. The climber starts to ascend when she was at 10ft
Explanation:
Since the graph is a straight line, we can say that the graph is linear.
Then, the graph is a function if for every value of x there is a unique related value in y. In this case, every value of the time is related to a unique value of elevation. So, the graph is a function.
The y-intercept is the value of y when x is equal to 0. The y-intercept of the graph is 10 ft. It means that when the rock climber starts, she was at 10 ft.
Finally, the x-intercept is the value of x when y is equal to 0. Since the climber starts at 10ft, there isn't a time when the climber was at 0 ft.
