graph: C leaves at 4pm, drives 55mph; friends leave at 4:30

[jessica098]

Can anyone help me with this problem?

Chris and his friends are heading to a rock concert located out of town and they’ve decided to take two cars. Chris leaves his house at 4:00pm, and drives at a speed of 55mph. His friends are running a little behind, and they leave for the concert at 4:30pm, driving at a speed of 70mph. Assuming the two cars travel at a constant speed, at what time will Chris’ friends pass Chris?

I'm supposed to create a graph of the situation, but how do I represent the fact that the two cars leave at different times in my graph?

 

[Denis]

Re: Help with a graph

Simply calculate where Chris is at 4:30; then you can have 'em leave at same time, with Chris ahead: kapish?

 

[Deleted member 4993]

Can anyone help me with this problem?

Chris and his friends are heading to a rock concert located out of town and they’ve decided to take two cars. Chris leaves his house at 4:00pm, and drives at a speed of 55mph. His friends are running a little behind, and they leave for the concert at 4:30pm, driving at a speed of 70mph. Assuming the two cars travel at a constant speed, at what time will Chris’ friends pass Chris?

I'm supposed to create a graph of the situation, but how do I represent the fact that the two cars leave at different times in my graph?

What will be the x-axis of your graph?

What will be the y-axis?

What would the slopes of the graph represent?