Variable - a letter that represents an unknown number.
eg : x, A, n
Expressions - any single number or variable, or combination of operations ( +, -, x, / ) involving numbers. eg : 5, r, 8t, x+9, 2y, -7
Value - a known or calculated amount
Constant - a number that does not change. Increase or decrease that value of an expression.
Numerical Coefficient - a number that multiples the variable
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgG7xx6I2XUZD-LQxRQxpaICeyoVIcJO1xi04wCrW80H7bMGrsHV9LyK3PKwEbEiL-fyvDHIocfyvLe5TGdGDJVPLXZV9iqteztUliTzPeSosfdYmDb2R3rdnDa2TDcOw96qhjRdvRP_gzM/s400/mathwertyu.jpg)
Linear Relation - a pattern made by two sets of numbers that results in points along a straight line on a coordinate grid
eg :
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQ_jFr4vePLriLyETdsJMhiqYnSMtBxjSFqtxEGjHmlPihCDFzUuN70NcQm15Ks7H13j8srDhI-6q849kF3VbNnRVXGssG4Df2G5v0iV1KKmvekspbsnOn1g_L7ClqrS6ir1JuXTM7_7gd/s400/math45.jpg)
Graph - a visual way to show how two sets of numbers relate to each other
Relationship - a pattern formed by two sets of numbers
Math game on graphing linear relations
Video :