Question

At a track event, the distance y (in meters) traveled by student a in x seconds is represented by the equation y=9x. how many miles did student a travel in 1 second? in 2 seconds?

Answer 1

x = 0.00559234073 for 1 second

x = 0.0111846815 for 2 seconds

Explanation:

We first need to know that 1 mile = 1609.344 meters to get one unit to use or else it'll be confusing.

For 1 second, x will be replaced by 1.

So:

y=9(1)

y=9

And for 2 seconds, x will be replaced by 2.

So:

y=9(2)

y=18

These are the measurements in meters. Then, we need to find what it is in miles.

So we can use a proportion for this.

1/1609.344 = x/9

1609.344x = 9

x = 0.00559234073 for 1 second

For 2 seconds:

1/1609.344 = x/18

1609.344x = 18

x = 0.0111846815 for 2 seconds