Which of the following correctly describes the y-intercept?

Understand the Problem

The question is asking for the correct interpretation of the y-intercept in the context of a cellular phone plan graph. The y-intercept represents the number of minutes available at the start of the plan, which is fundamental in understanding the graph's meaning.

Answer

There are 60 minutes at the start of the plan.

Steps to Solve

Identify the y-intercept on the graph

Examine the graph to determine the value of the y-intercept. The y-intercept is the point where the line crosses the y-axis (when the x-value is 0).

Interpret the meaning of the y-intercept

In the context of the cellular phone plan, the y-intercept indicates the number of minutes available at the start of the plan (day 0).

Match the interpretation with answer choices

Evaluate the provided answer choices to find which one correctly reflects the number of minutes at the starting point. Focus on the value you identified from the graph.

The correct answer is: There are 60 minutes at the start of the plan.

More Information

In many cellular phone plans, the y-intercept on a graph represents the initial amount of minutes allocated at the beginning of the period. In this case, it shows that the user starts with 60 minutes before any usage occurs over the month.

Tips

Misreading the y-intercept: Make sure to carefully check where the line crosses the y-axis.
Confusing the x and y values: Remember that the y-axis represents the number of minutes, while the x-axis represents the days.

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