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.
