Matthew is running a study on the effects of room temperature on performance on an algebra test. One group takes the test in a room heated to 90 degrees, and the other group takes the test in a room with normal room temperature. What is the independent variable?

Independent variable is temperature

Explanation:

An equation has this form: Y = f (x), where Y is dependent variable andX is independent variable.

In this case Y (Dependent variable) is Perfomance in test, an it depends on x (Independent variable) wich is temperature.