How to draw a graph 

Draw the x axis. Make a horizontal line on the paper. You may draw arrows on the ends of the line to indicate it is a number line that continues past your data sample. Put the label "X" to the right of the line to indicate the x axis. Draw the y axis. Make a vertical line that passes through the origin of the x axis. Put the label "Y" above the line. Make equally spaced tick marks on the y axis. For this example you should label the tick marks from 2 to 20 above the 0. Calculate the values of y for several values of x. We will be drawing a graph using the function f(x) = 2x. This means that y = 2x. For every possible value on the x axis there will be a corresponding value on the y axis. To calculate the value of y, plug a number into x. If x= 3 then f(x) = 6. Only positive values will be used in this example. Mark the ordered pairs on the graph. Count over on the x axis then count up on the y axis. The value of y is marked on the the graph above the x value.