This week in Math 10, we learnt a lot of words. The reason why I chose to do this blog post on this topic was because the vocab that we learnt can be tricky to memorize. Especially when it comes to using them in graphs. I’ll also say my tips for memorizing each.

Discrete variables – Variables that are counted. The graphs have dots on them. – A way to remember is that discrete and dots both start with a “D”.

Continuous variables – Variables that are measured. The graphs have lines on them which like the dots are connected. – A way to remember is that both continuous and connected start with a “C”.

Intercepts – It where a relation crosses (or intercepts) the axes on a graph.

Domain – Domain is the input, x variable, and the independent variable. It comes first in the ordered pair and it’s used to find the x-intercept. – One way to remember is that it’s like walls at the points and they’re coming in. For the ordered pair, I remember which goes first by thinking “walls get built first”.

Range – Range is kind of like the opposite of the domain. It’s the output, y-variable, and the dependent variable. It comes second in the ordered pair and is used to find the y-intercept. – A way to remember this is that the range is like floors and ceiling coming in. Floors and ceilings are usually built after the walls.

Dependent variable – It’s a variable that depends on the independent variable.

Independent variable – A variable that is independent amongst others and doesn’t rely on the other variables in an expression or function.