How do you graph the line $ y = x - 200 $ ?

Hint: A graph of a function f is the set of ordered pairs; the equation of graph is generally represented as $ y = f\left( x \right) $ , where x and f(x) are real numbers. We substitute the value of x and we determine the value of y and then we mark the points in the graph and we join the points.

Complete step by step solution:
 Here in this question, we have to plot the graph for the given function. A graph of a function is a set of ordered pairs and it is represented as $ y = f\left( x \right) $ , where x and f(x) are real numbers. These pairs are in the form of cartesian form and the graph is the two-dimensional graph.
First, we have to find the value of y by using the graph equation $ y = x - 200 $ . Let we substitute the value of x as $ 0 $ , $ 200 $ , and $ 100 $ .
Now we consider the value of x as $ 0 $ , the value of y is
 $ \Rightarrow y = 0 - 200 $
 $ \Rightarrow y = - 200 $
Now we consider the value of x as $ 100 $ , the value of y is
 $ \Rightarrow y = 100 - 200 $
 $ \Rightarrow y = - 100 $
Now we consider the value of x as $ 200 $ , the value of y is
 $ \Rightarrow y = 200 - 200 $
 $ \Rightarrow y = 0 $
Now we draw a table for these values we have



The graph plotted for these point is represented below:


Note: The graph plotted is of two dimensional. The graph is plotted in x-axis versus y axis. By the equation of a graph, we can plot the graph by assuming the value of x. We can’t assume the value of y because the value of y depends on the value of x.