This equation is
an example of a situation in which you will probably want to be
particular about the x-values
you pick. Because the x
is multiplied by a relatively large value, the y-values
grow quickly. For instance, you probably wouldn't want to use
x
= 5 or x
= –3. You could
pick larger x-values
if you wished, but your graph would get awfully tall.
And as you can see,
the graph is pretty tall already:
Graph y
= 3
Don't let this one scare
you. Yes, there is no "x"
in the equation, but that's okay. Just think about it this way: it doesn't
matter what x-value
you pick; y
will always be 3.
Your T-chart would
look something like this:
Then your graph would
look like this:
Any time you have a "y
equals a number" equation, with no x
in it, the graph will always be a horizontal line.
