Oh my my, who do we have here?~
Welcome back dear guest of Mathland~
Would you perhaps accompany me on another tour? If so, then follow me~
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Today, we will be learning about functions. A function is usually symbolized by the term f(x). Although it may seem confusing when put into a equation - for example, f(x) = 2x+4 - the f(x) is usually able to be replaced with "y". Therefore the equation f(x) = 2x+4 is basically just y = 2x+4. Also, a very important fact, the "x" in f(x) is merely a placeholder for what is to be substituted into the equation.
In addition, if you graph a function on a graph, if it passes the vertical line test, that means it is indeed a function. The vertical line test is simply just drawing vertical lines across the graph and seeing whether or not the line drawn goes through one point. If it does go through one point then it is a function. However, if it passes through two or more points, it is not.
Also, x stands for the domain for the function while y is the range. X usually goes from left to right or right to left, and y usually goes from up to down or bottom to top.
Speaking of top... has anyone seen the top hat the Mad Hatter wears?
It's absolutely intriguing.~
Oh my, it seems we are running a tad bit late on time. The white rabbit would be absolutely appalled at this lateness. I shall bid you goodbye for now, dear Mathland
guest. See you next time.~
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