Question

PLEASE HELP VERY URGENT!

The graph shows the distance Kerri drives on a trip. What is Kerri's speed?
Driving Time and Distance

A. 25 miles per hour
B. 60 miles per hour
C. 75 miles per hour
D. 50 miles per hour

Answer 1

Kerri's speed = 50 mile per hour. Therefore option (D) is true.

Explanation:

Given the distance-time graph

It is clear from the distance-time graph that:

• at Time = 1 hour, Distance = 50 miles

• at Time = 2 hours, Distance = 100 miles

so the two points on the distance-time graph is:

• (1, 50)

• (2, 100)

Finding the slope between the points to determine the speed.

Please note that the slope between the points represents the speed or rate of change.

Speed = Rate of change = y₂-y₁ / x₂-x₁

= 100 - 50 / 2-1

= 50 / 1

= 50 miles per hour

Thus, Kerri's speed = 50 mile per hour. Therefore option (D) is true.