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The monthly service charge (in dollars) from a phone company is

\displaystyle {C}{\left({t}\right)}={26}+{0.02}{t}

, where

\displaystyle {t}

is the number of minutes talked that month.

The slope in this equation is:

What does the slope mean in this context?

Every additional 0.02 minutes of call time costs an additional 1 dollar
The customer is charged 0.02 dollars before any minutes are used
A 1 minute phone call costs 0.02 dollars
Every additional minute of call time costs an additional 0.02 dollars

The

\displaystyle {y}

-intercept in this equation is:

What does the

\displaystyle {y}

-intercept mean in this context?

The customer is charged 26 dollars before any minutes are used
The customer talked for 26 minutes in a month
A 26 minute phone call costs 1 dollar
A phone call costs 26 dollars per minute

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