Question

a taxi driver charges $2 per mile.
y = 2x
use the direct variation equation to
calculate the cost of an 8 - mile trip in
this taxi.
$?

Explanation:

Step1: Identify variables in equation

In \( y = 2x \), \( x \) is miles, \( y \) is cost. For 8 - mile trip, \( x = 8 \).

Step2: Substitute \( x = 8 \) into equation

Substitute \( x = 8 \) into \( y = 2x \), so \( y = 2\times8 \).

Step3: Calculate the result

\( 2\times8 = 16 \).

Answer:

16