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How do I graph x=1.
Make a table of points. Since the letter y does not
appear in the equation, the choices for y is
arbitrary, so we can choose any number for y. However
there is only one number that can be chosen for x, and
that is 1 because the equation is x=1.
So make this table:
x | y
-------
1 | 7
1 |-2
1 | 1
1 | 4
1 |-6
Plot those points and you get:
Now draw a straight line through them.
As you see you get a vertical line.
The graph of "x = (a number)" is always
a vertical line which is that number of units
away from and parallel to the y-axis.
The graph of "y = (a number)" is always
a horizontal line which is that number of units
away from and parallel to the x-axis.
Edwin
