By definition the control in a science experiment is a sample that remains the same throughout the experiment. The control must remain the same or equal at all times in order to receive accurate results. You can have as many controls as necessary to achieve results.
Graphs are often an excellent way to display your results. In fact, most good science fair projects have at least one graph. For any type of graph: Generally, you should place your independent variable on the x-axis of your graph and the dependent variable on the y-axis.
f(x) = x - x. Algebra -> Graphs -> SOLUTION: Find an equation of the secant line containing (1, f(1)) and (2,f(2)). Ad: Mathway solves algebra homework problems with step-by-step help! Question 431096: Find an equation of the secant line containing (1, f(1)) and (2,f(2)). You can put this solution on YOUR website! where and are the coordinates of the given points.