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Is dependent variable the variable that can't change?
Not exactly sure what you mean by "can't change." However, I if I do understand you correctly, the dependent variable CAN change. The dependent variable will change according to the independent variable's value and overall effect. For example, in an experiment involving water's effect on plants, the dependent variable may be the height of the plant or the glucose produced. Based on the amount of the independent variable (represented on the x axis of a data graph), the dependent variable will increase or decrease. In this case, both dependent values (glucose and height) would probably increase.
What have in common independent and dependent variables?
Independent and dependent variables are graphed on the axes of a rectangular grid (e.g. graph paper). The important thing is to understand which is which. The independent variable is graphed on the horizontal (x-) axis. In an experiment you choose values of the independent variable and measure the values of the dependent variable (it "depends' on the other). The dependent variable is graphed on the vertical (y-) axis.
In what ways are equations useful?
they are easier ways to write the answer out and make the answer easier to understand
What is an independent variable dependent variable and controlled variable?
an independent variable is a thing you can change on your own. a depentent variable is a variable you depend on and a responding variable is a variable that reacts to the experiment
The input variable is called the what variable?
The independent variable. The output variable is dependent on this variable's value and so is called the dependent variable.
