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,

$\text{speed, m, =}\frac{y_2-y_1}{x_2-x_1}=\frac{90-0}{3-0}=\frac{90}{3}=30\text{ ft per min}$

A is the answer