How do the solutions to an equation relate to the graph of the equation?
How do you solve a system of equations approximately using graphs and tables?

Question

How do the solutions to an equation relate to the graph of the equation?
    How do you solve a system of equations approximately using graphs and tables?

anonymous · Answer

@johnweldon1993 @elementwielder @mathstudent55

anonymous · Answer

The main one is that a graph shows (curved lines usually) a set of points (x, y) taken from one (or more) function(s) y = f(x).

 
So you can see how the function looks.
Also 2 functions intersect at x, namely the equation f(x) = g(x) if and only if their graphs intersect at (on the same vertical line through) x on the x axis.
Also the roots of f(x) are points on the x axis where f(x) touches / crosses, and satify the equation f(x) = 0.

anonymous · Answer

Go to this website and watch the video and take notes for help in my opinion:)

anonymous · Answer

http://www.virtualnerd.com/algebra-2/linear-systems/graphing/solve-by-graphing/equations-solution-by-graphing