Question

A plane that carries mail makes a round trip each day from Chicago to New York. It makes 1 intermediate stop on the way to New York and 1 intermediate stop on the way back to Chicago. Suppose you make a graph of the altitude of the plane for one day, with time on the horizontal axis and altitude on the vertical axis. How many times will the graph touch the horizontal axis?

5
7
4
2

Answer 1

Any ideas?

Answer 2

i think its b

Answer 3

why 7?

Answer 4

i made an educated guess

Answer 5

there really isn't a way to set this up because this problem doesn't provide that much information thats why i said i made an educated guess

Answer 6

The question states:

"Suppose you make a graph of the altitude of the plane for one day, with time on the horizontal axis and altitude on the vertical axis."

Did you follow these instructions?

Answer 7

yes but there not really given a time it just says an all round trip so i dont know what to put on there

Answer 8

2?

Answer 9

that was my second guess @Jaylokss

Answer 10

Can we stop "guessing" and start thinking please :-)

Answer 11

That^ is the tip to NYC now the plane must return...

Answer 12

Now count how many times the graph touches the horizontal axis.

Answer 13

4