This week, we learned about function notation. In this blog post, I am going to demonstrate how to understand and solve function notation.

Let’s say we had an equation that looked like this:

F(x) = 3x+4    F(3)

The F(x) notation is another way of showing the y value of a function. Because F(x) = y.

This is showing that we need to find the answer for the equation if X is equal to three.

The equation would end up looking like this:

(3)(3)+4

Which is equal to 13

Now 13 is representing our Y value. Because writing F(x) = 13 is the same thing as writing y = 13

Once you understand the steps of function notation, it is easy to solve these questions.

This week, we started to learn about relations. I thought that Domain and Range was really interesting and easy to understand once you have learned about it. In this blog post, I am going to talk about Domain and Range.

Domain: The domain of a function is the complete set of possible values of the independent variable.

Range: he range of a function is the complete set of all possible resulting values of the dependent variable.

Domain is always the X value and range is always the Y value. ( X is red and Y is blue).

If the relation is discrete, the domain and range would look something like this:

{X|0,3,-3,2} {Y|2,4,-2,}

If the relation is continuous but had a determined end the domain and range would look something like this:

{X|-3<X<3, XER} {Y|-2<Y<4, YER}

If the relation is continuous but didn’t have a determined end the domain and range would look something like this:

{X| XER} {Y| YER}