Question

The percentage of battery remaining, y, on a tablet's battery after x hours can be represented by the given graph. coordinate grid with the x axis labeled time in hours and the y axis labeled percent of battery remaining, with a line that passes through the points 0 comma 30 and 3 comma 0 What is the meaning of the y-intercept in the context of the problem?

The tablet starts with 30 percent of battery remaining.
After 30 hours, the tablet will have 0 percent of battery left.
The tablet will not have any battery remaining after 3 hours.
The tablet loses 3 percent of battery every hour.

Answer 1

Explanation:

The meaning of the y-intercept of the given graph is the starting battery percentage of the tablet. In this case, the y-intercept is 30, which means that the tablet starts with 30 percent of battery remaining. As the x-axis represents time in hours, at the beginning, the tablet has not been in use yet, and it has a full charge of 30 percent. From the given graph, we can see that after 3 hours, the tablet's battery percentage drops to 0. Therefore, it can be concluded that the battery of the tablet does not last for more than 3 hours, and it has to be recharged after this time period.

So, the correct option that describes the meaning of the y-intercept in the context of the problem is "The tablet starts with 30 percent of battery remaining."