D=rt and y=kxPractice

Front

What is the formula for calculating speed?

Back

Speed (r) = Distance (d) / Time (t)

Front

In the equation y = kx, what does k represent?

Back

k is the constant of proportionality.

Front

If a car travels 60 miles in 1 hour, what is its speed?

Back

Speed = 60 miles / 1 hour = 60 miles per hour.

Front

What is the relationship between distance, rate, and time?

Back

Distance = Rate x Time (d = rt)

Front

If a person walks at a speed of 3 miles per hour for 2 hours, how far do they walk?

Back

Distance = 3 miles/hour x 2 hours = 6 miles.

Front

What is the constant of proportionality in the equation y = 5x?

Back

The constant of proportionality is 5.

Front

If a train travels at a speed of 80 miles per hour, how long will it take to travel 160 miles?

Back

Time = Distance / Speed = 160 miles / 80 miles/hour = 2 hours.

Front

What is the formula to find distance when speed and time are known?

Back

Distance (d) = Speed (r) x Time (t)

Front

If a cyclist rides at a speed of 12 m/s for 10 seconds, how far do they travel?

Back

Distance = 12 m/s x 10 s = 120 meters.

Front

What does the slope of a line represent in a distance-time graph?

Back

The slope represents the speed or rate of travel.