Question

This graph shows the distance that a robot walks. What is the robot's speed?Walking Time and Distance90807080Distance (feet)5040302010012345BTime (minutes)O A. 30 feet per minuteB. 5 feet per minuteO C. 20 feet per minuteO D. 10 feet per minute

Answer 1

On the graph given,

`\begin{gathered} \text{Where} \\ x=0,y=0 \\ x=3,y=90 \\ (x_1,y_1)=(0,0) \\ (x_2,y_2)=(3,90) \end{gathered}`

To find the robot's speed below, using change of slope (m) formula,

`\text{speed, m, =}(y_2-y_1)/(x_2-x_1)=(90-0)/(3-0)=(90)/(3)=30\text{ ft per min}`

A is the answer