3.2.5 8th U3T2 Flashcard Review IM

Front

What does the vertical intercept of a graph represent?

Back

The vertical intercept represents the initial value or starting point of the function, indicating the amount paid to start a service, such as the cost to enter a cab.

Front

How do you calculate the slope of a line?

Back

The slope is calculated as the change in the vertical value (y) divided by the change in the horizontal value (x), often expressed as rise/run.

Front

What is the slope of a line that rises 3 units for every 2 units it runs?

Back

The slope is 3/2.

Front

What is the slope of a line that rises 1 unit for every 2 units it runs?

Back

The slope is 1/2.

Front

If Tara can travel 10 miles in 2 hours, what is her speed in miles per hour?

Back

Tara's speed is 5 miles per hour.

Front

How do you determine who travels further based on their speed?

Back

Compare the distances traveled by each person after the same amount of time, using their respective speeds.

Front

If Petra uses the equation y = 8x, what does '8' represent?

Back

The '8' represents Petra's speed in miles per hour.

Front

How far will Petra travel after 1 hour if her speed is modeled by y = 8x?

Back

Petra will travel 8 miles after 1 hour.

Front

What is the formula for calculating distance traveled?

Back

Distance = Speed × Time.

Front

If a cab charges a flat fee of $20 plus $3 for every mile, what is the cost function?

Back

The cost function can be expressed as C(x) = 20 + 3x, where x is the number of miles.