Question

The equation d=4 -1/15t represents your distance from home,d, for each minute you walk,t. If you graphed this equation, determine whether you are walking toward or away from home and explain

Answer 1

we have

`d=4 -(1)/(15)t`

using a graph tool

see the attached figure

For t=0 d=4 -------> the y-intercept

that means that at the time t=0 the house was four units away.

For t=60 min d=0 -------> x-intercept

that means he was already at home at the time t=60 minutes.

therefore

the graph of this equation represents the walk towards the house