How Do You Graph Linear Functions Like f(x) = x + 3?

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To graph the linear function f(x) = x + 3, select two values for x to calculate corresponding y values using the function. Plot the pairs of (x, y) on graph paper and draw a line through these points. It is often helpful to include the points where f(x) = 0 and x = 0 for clarity. Adding a third point can serve as a verification step. This method ensures an accurate representation of the linear function on a graph.
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How exactly do you do this, graphing linear functions?

f(x) = x + 3?

Can someone explain how to do it.
 
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Pick two values of x and use f(x) to find the corresponding values of y. Then plot each pair of (x, y) values on your graph paper and draw a line through those two points.
 
Often plotting f(x) = 0 and x = 0 are the easiest (assuming they are not the same point). Furthermore when drawing it out a 3rd point helps as a check.
 

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