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What about a parabola
lying on its side?
(I'll teach you
about these later.)
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Ouch! This guy hits in
two
spots! |
So, Sideways Parabola
Guy is not a function.
The only problem with
this method is that you don't always have a picture to look at.
(There are other ways
to tell that I'll show you later.)
Which of these are
functions?
The first two are...
The first guy is just a line. He's officially called a linear
function.
What's the only type
of line that isn't a function? ________________
The second guy passes
the vertical line test, so it's a function.
The last guy fails
the vertical line test and is not a function.
Continued on the
next
page
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and distribution and/or downloading of these lessons is strictly
prohibited. |
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