Question

1. the big race - heat 3

barbara, mark, and carlos participated in the third heat of “the big race.” barbara thought she could win with a 3 - meter head start even though she only pedaled 3 meters every 2 seconds. mark began at the starting line and finished the 20 - meter race in 5 seconds. meanwhile, carlos rode his tricycle so that his distance (y) from the starting line in meters could be represented by the equation y = 5/2x + 1, where x represents time in seconds.
a. what is the dependent variable? what is the independent variable?

Explanation:

In a relationship where one variable's value depends on another, the dependent variable is affected by the independent variable. Here, the distance $y$ from the starting - line depends on the time $x$. So, $y$ changes as $x$ changes.

Answer:

Dependent variable: $y$
Independent variable: $x$