Corey's favorite hiking trail is 10 km long. They wrote this equation to find how much time it will take to hike the trail [tex]\((t)\)[/tex] if they hike at a rate of [tex]\(r\)[/tex] kilometers per hour:
[tex]\[ \frac{10}{r} = t \][/tex]

Identify the dependent and independent variables:

Dependent variable:
- Time [tex]\((t)\)[/tex]

Independent variable:
- Rate [tex]\((r)\)[/tex]



Answer :

Let's analyze the given equation:

[tex]\[ \frac{10}{r} = t \][/tex]

Here, [tex]\( t \)[/tex] represents the time it will take Corey to hike the trail, and [tex]\( r \)[/tex] represents the rate at which Corey hikes (in kilometers per hour).

### Independent Variable:
The independent variable is the variable that can be changed or controlled in an experiment to observe its effect on the dependent variable. In this case, the rate [tex]\( r \)[/tex] is the value that can be changed. Corey can choose to hike at different speeds (rates), making [tex]\( r \)[/tex] the independent variable.

### Dependent Variable:
The dependent variable is the variable that depends on the value of the independent variable. In this case, the time [tex]\( t \)[/tex] depends on the rate [tex]\( r \)[/tex]. As Corey changes the hiking rate, the time taken to complete the trail will change accordingly. Therefore, [tex]\( t \)[/tex] is the dependent variable.

### Conclusion:
- Dependent Variable: Time [tex]\( t \)[/tex]
- Independent Variable: Rate [tex]\( r \)[/tex]

Hence, the dependent variable is [tex]\( t \)[/tex] (Time), and the independent variable is [tex]\( r \)[/tex] (Rate).