Question

1. orlando measures the brightness of a flashlight bulb as he adds more batteries to the circuit. if he prepares a graph of the data: a. the number of batteries should be represented on the x - axis. b. the brightness of the flashlight bulb should be represented on the x - axis. c. it doesnt matter which variable he places on the x - axis. d. he will need more information before deciding where to place the variables.

Explanation:

Step1: Identify independent and dependent variables

In an experiment, the independent variable is the one that is changed or controlled, and the dependent variable is the one that is measured as a result of the change in the independent variable. Here, the number of batteries is the independent variable (it is being added or changed), and the brightness of the flashlight bulb is the dependent variable (it is being measured as the number of batteries changes).

Step2: Recall graph - axis convention

In a graph, the independent variable is usually placed on the x - axis and the dependent variable is placed on the y - axis.

Answer:

A. the number of batteries should be represented on the x - axis.