Question 437745
To plot a graph, first know what your input and output values are (usually x and y, but not necessarily).


Next, pick a set of x-values that make the function easy to evaluate. For example, if you are doing {{{y = 3x + 5}}}, you might pick x-values such as -2, -1, 0, 1, and 2. If you are doing a trigonometric function, picking values such as {{{pi/4}}}, {{{pi/6}}}, etc. can work.


Also, make sure you have picked enough points. If you know your equation is linear, two points is sufficient. However, you will need more points to graph other functions, including trigonometric and higher-order polynomial functions.