Question

What statement best describes an independent variable?

A. The factor that's not changed by the experimenter and is impacted by the dependent variable
B. The factor that's changed by the experimenter and impacts the dependent variable
C. The factor that's changed by the experimenter and impacts the constant in an experiment
D. The factor that does not change, but impacts the constant in an experiment

Answer 1

B and normally plotted on the horizontal axis of a graph, whilst the DEPENDENT variable normally goes up the VERTICAL axis.
y=f(x) is one of the maths ways of writing it.
and eg would be y=2x. You select values of x (independent v) and double them to get y. (dependent on x). Straight line through the point x=0 y=0 if it all works out nicely. Try it on and excel spreadsheet, maybe
http://perendis.webs.com

Answer 2

Thank you!!!!!!!! @osprey

Answer 3

that's ok :)