Equations and Functions
Posted by: mrswolfordmath7 on: October 20, 2008
Equation: a mathematical sentence that includes an equal sign.
Examples: 2 + 7 = 9 (true equation)
13 – 6 = 9 (false equation)
2 + x = 15 (open sentence)
Function: a statement in which each input (x ) is paired with exactly one output (y). If we think of the x values as people and the y values as places, we can say that there can be more than one person at the same place (function), but you cannot be in more than one place at one time (not a function).
Examples:
Function:
Not a Function:
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1 Response to "Equations and Functions"
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- Judy: Jackie, I am glad you found that blogging was a useful tool and one you are considering using in the classroom. I think kids today would find it muc
- Tom Escott: Jackie, I thought your explanation was very easy to follow. As you probably have guessed, when you toss in negative coefficients or a problem where
- Judy: Jackie, I am sure you will catch the attention of all sports fans with your two examples. Using information that students can relate to, will enable
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October 25, 2008 at 3:30 pm
Hi Jackie,
I like your explanation where you say “Many people can be in one place, but a person can only be in one place at a time.” That is an excellent word picture which I’d love to borrow. It’s so clear, and simple.
Thank you,
Kim L.